CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5487 vulnerabilities reference this CWE, most recent first.
GHSA-47GG-JMH3-W48G
Vulnerability from github – Published: 2022-05-24 17:35 – Updated: 2022-05-24 17:35Mitsubishi MELSEC iQ-R Series PLCs with firmware 49 allow an unauthenticated attacker to halt the industrial process by sending a crafted packet over the network. This denial of service attack exposes Improper Input Validation. After halting, physical access to the PLC is required in order to restore production, and the device state is lost. This is related to R04CPU, RJ71GF11-T2, R04CPU, and RJ71GF11-T2.
{
"affected": [],
"aliases": [
"CVE-2020-16850"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-11-30T22:15:00Z",
"severity": "HIGH"
},
"details": "Mitsubishi MELSEC iQ-R Series PLCs with firmware 49 allow an unauthenticated attacker to halt the industrial process by sending a crafted packet over the network. This denial of service attack exposes Improper Input Validation. After halting, physical access to the PLC is required in order to restore production, and the device state is lost. This is related to R04CPU, RJ71GF11-T2, R04CPU, and RJ71GF11-T2.",
"id": "GHSA-47gg-jmh3-w48g",
"modified": "2022-05-24T17:35:08Z",
"published": "2022-05-24T17:35:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-16850"
},
{
"type": "WEB",
"url": "https://blog.scadafence.com/vulnerability-in-mitsubishi-electric-melsec-iq-r-series"
},
{
"type": "WEB",
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-282-02"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-47QP-HQVX-6R3F
Vulnerability from github – Published: 2026-06-18 13:07 – Updated: 2026-07-20 21:21Summary
The JLine3 Telnet server (remote-telnet module) does not limit the number of
environment variables a client may inject via the Telnet NEW-ENVIRON option. An
unauthenticated attacker can flood the server with a large number of unique
variable pairs before sending the terminating IAC SE byte, exhausting JVM heap
memory and causing an OutOfMemoryError (denial of service). Approximately 3–4 MB of
network traffic is sufficient to consume a 512 MB JVM heap.
Details
TelnetIO.readNEVariables() (TelnetIO.java:1127-1180) processes incoming NEW-ENVIRON
variable pairs in a loop and stores each pair in a HashMap held by ConnectionData:
// TelnetIO.java:1139-1178
boolean cont = true;
if (i == NE_VAR || i == NE_USERVAR) {
do {
switch (readNEVariableName(sbuf)) {
case NE_VAR_OK:
TelnetIO.this.connectionData.getEnvironment().put(str, sbuf.toString());
// ← no per-connection count limit
break;
case NE_VAR_UNDEFINED:
break; // cont remains true, loop continues
}
} while (cont); // cont is never set to false; only exits via return
}
The variable accumulator map is a plain HashMap initialized with capacity 20 and
no maximum size:
// ConnectionData.java:98
environment = new HashMap<String, String>(20);
Per-variable limits exist (name: max 50 chars, value: max 1000 chars), but there is no
cap on the count of variables. Each map entry occupies approximately 2 KB of heap
(String headers + Map.Entry + backing char arrays). On a JVM with a 512 MB heap,
approximately 250,000 unique entries trigger an OutOfMemoryError.
Network cost: using sequential 1-byte names (e.g., \x01, \x02, ...) and 1-byte
values, each variable pair requires roughly 13 protocol bytes. Sending 250,000 pairs
requires only ~3.25 MB of network traffic — feasible in seconds over any reasonable
network connection.
No authentication is required. NEW-ENVIRON negotiation occurs before login.
Affected source files:
- remote-telnet/src/main/java/org/jline/builtins/telnet/TelnetIO.java lines 1127-1180
- remote-telnet/src/main/java/org/jline/builtins/telnet/ConnectionData.java line 98
PoC
Connect to the JLine3 Telnet server and, after completing WILL/DO option negotiation, send a NEW-ENVIRON SEND subneg followed by a single large IS subneg containing thousands of unique variable pairs before the final IAC SE.
Protocol structure (no authentication required): 1. Standard Telnet option negotiation (IAC DO NEW-ENVIRON, IAC WILL NEW-ENVIRON) 2. Server sends IAC SB NEW-ENVIRON SEND IAC SE 3. Client responds with: IAC SB NEW-ENVIRON IS [NE_VAR 0x01 NE_VALUE 0x01] ← variable pair 1 [NE_VAR 0x02 NE_VALUE 0x01] ← variable pair 2 ... repeated N times ... IAC SE ← only sent after N pairs
Each iteration adds one entry to the per-connection environment map. The connection thread blocks reading from the socket while accumulating pairs, so the attacker controls the timing of the OOM.
Reproduction environment:
- JLine3 built from current master on x86_64 Linux, OpenJDK 25.0.2
- remote-telnet module started with its default configuration
- Confirmed by source-code analysis; loop exit condition and missing count guard
verified by inspection of readNEVariables() and ConnectionData constructor
Impact
Type: Denial of Service (heap memory exhaustion / OutOfMemoryError)
Who is affected: Any application embedding the JLine3 remote-telnet module and
exposing its Telnet server. No credentials are required. A single connection can exhaust
the entire JVM heap, crashing the host process or triggering JVM out-of-memory
handling that impacts all users sharing that JVM instance.
Credits
This issue was identified by Michał Majchrowicz and Marcin Wyczechowski, members of the AFINE Team.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.jline:jline-remote-telnet"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.2.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-56740"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-18T13:07:25Z",
"nvd_published_at": "2026-07-17T22:17:57Z",
"severity": "HIGH"
},
"details": "### Summary\n\nThe JLine3 Telnet server (`remote-telnet` module) does not limit the number of\nenvironment variables a client may inject via the Telnet NEW-ENVIRON option. An\nunauthenticated attacker can flood the server with a large number of unique\nvariable pairs before sending the terminating IAC SE byte, exhausting JVM heap\nmemory and causing an OutOfMemoryError (denial of service). Approximately 3\u20134 MB of\nnetwork traffic is sufficient to consume a 512 MB JVM heap.\n\n### Details\n\n`TelnetIO.readNEVariables()` (TelnetIO.java:1127-1180) processes incoming NEW-ENVIRON\nvariable pairs in a loop and stores each pair in a `HashMap` held by `ConnectionData`:\n\n```java\n// TelnetIO.java:1139-1178\nboolean cont = true;\nif (i == NE_VAR || i == NE_USERVAR) {\n do {\n switch (readNEVariableName(sbuf)) {\n case NE_VAR_OK:\n TelnetIO.this.connectionData.getEnvironment().put(str, sbuf.toString());\n // \u2190 no per-connection count limit\n break;\n case NE_VAR_UNDEFINED:\n break; // cont remains true, loop continues\n }\n } while (cont); // cont is never set to false; only exits via return\n}\n```\n\nThe variable accumulator map is a plain `HashMap` initialized with capacity 20 and\n**no maximum size**:\n\n```java\n// ConnectionData.java:98\nenvironment = new HashMap\u003cString, String\u003e(20);\n```\n\nPer-variable limits exist (name: max 50 chars, value: max 1000 chars), but there is no\ncap on the *count* of variables. Each map entry occupies approximately 2 KB of heap\n(String headers + `Map.Entry` + backing char arrays). On a JVM with a 512 MB heap,\napproximately 250,000 unique entries trigger an `OutOfMemoryError`.\n\nNetwork cost: using sequential 1-byte names (e.g., `\\x01`, `\\x02`, ...) and 1-byte\nvalues, each variable pair requires roughly 13 protocol bytes. Sending 250,000 pairs\nrequires only ~3.25 MB of network traffic \u2014 feasible in seconds over any reasonable\nnetwork connection.\n\nNo authentication is required. NEW-ENVIRON negotiation occurs before login.\n\nAffected source files:\n- `remote-telnet/src/main/java/org/jline/builtins/telnet/TelnetIO.java` lines 1127-1180\n- `remote-telnet/src/main/java/org/jline/builtins/telnet/ConnectionData.java` line 98\n\n### PoC\n\nConnect to the JLine3 Telnet server and, after completing WILL/DO option negotiation,\nsend a NEW-ENVIRON SEND subneg followed by a single large IS subneg containing\nthousands of unique variable pairs before the final IAC SE.\n\nProtocol structure (no authentication required):\n1. Standard Telnet option negotiation (IAC DO NEW-ENVIRON, IAC WILL NEW-ENVIRON)\n2. Server sends IAC SB NEW-ENVIRON SEND IAC SE\n3. Client responds with: IAC SB NEW-ENVIRON IS\n [NE_VAR 0x01 NE_VALUE 0x01] \u2190 variable pair 1\n [NE_VAR 0x02 NE_VALUE 0x01] \u2190 variable pair 2\n ... repeated N times ...\n IAC SE \u2190 only sent after N pairs\n\nEach iteration adds one entry to the per-connection environment map. The connection\nthread blocks reading from the socket while accumulating pairs, so the attacker\ncontrols the timing of the OOM.\n\nReproduction environment:\n- JLine3 built from current master on x86_64 Linux, OpenJDK 25.0.2\n- `remote-telnet` module started with its default configuration\n- Confirmed by source-code analysis; loop exit condition and missing count guard\n verified by inspection of `readNEVariables()` and `ConnectionData` constructor\n\n### Impact\n\n**Type**: Denial of Service (heap memory exhaustion / OutOfMemoryError)\n**Who is affected**: Any application embedding the JLine3 `remote-telnet` module and\nexposing its Telnet server. No credentials are required. A single connection can exhaust\nthe entire JVM heap, crashing the host process or triggering JVM out-of-memory\nhandling that impacts all users sharing that JVM instance.\n\n### Credits \n\nThis issue was identified by Micha\u0142 Majchrowicz and Marcin Wyczechowski, members of the AFINE Team.",
"id": "GHSA-47qp-hqvx-6r3f",
"modified": "2026-07-20T21:21:41Z",
"published": "2026-06-18T13:07:25Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/jline/jline3/security/advisories/GHSA-47qp-hqvx-6r3f"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56740"
},
{
"type": "WEB",
"url": "https://github.com/jline/jline3/pull/2000"
},
{
"type": "WEB",
"url": "https://github.com/jline/jline3/pull/2001"
},
{
"type": "WEB",
"url": "https://github.com/jline/jline3/commit/0389f0ee6d0375901b602671ad5dafd4d1d4ee09"
},
{
"type": "WEB",
"url": "https://github.com/jline/jline3/commit/4ee3a73849ffb9a85ec748e4e8cd8f6d81f84f40"
},
{
"type": "WEB",
"url": "https://github.com/jline/jline3/commit/934f09e6128cee33c2b13d42b6e859c1ee2d194b"
},
{
"type": "PACKAGE",
"url": "https://github.com/jline/jline3"
},
{
"type": "WEB",
"url": "https://github.com/jline/jline3/releases/tag/4.0.16"
},
{
"type": "WEB",
"url": "https://github.com/jline/jline3/releases/tag/4.2.1"
},
{
"type": "WEB",
"url": "https://github.com/jline/jline3/releases/tag/jline-3.30.14"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "JLine3 Telnet server: Unauthenticated Remote Memory Exhaustion via Unbounded Telnet NEW-ENVIRON Variables"
}
GHSA-47R2-R67P-RGW9
Vulnerability from github – Published: 2022-05-24 17:17 – Updated: 2023-08-16 18:30A vulnerability in the implementation of the Border Gateway Protocol (BGP) module in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain BGP packets. An attacker could exploit this vulnerability by sending a crafted BGP packet. A successful exploit could allow the attacker to cause a DoS condition on the affected device.
{
"affected": [],
"aliases": [
"CVE-2020-3305"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-05-06T17:15:00Z",
"severity": "HIGH"
},
"details": "A vulnerability in the implementation of the Border Gateway Protocol (BGP) module in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain BGP packets. An attacker could exploit this vulnerability by sending a crafted BGP packet. A successful exploit could allow the attacker to cause a DoS condition on the affected device.",
"id": "GHSA-47r2-r67p-rgw9",
"modified": "2023-08-16T18:30:18Z",
"published": "2022-05-24T17:17:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-3305"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-dos-P43GCE5j"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-47R3-9WVW-VMVM
Vulnerability from github – Published: 2022-05-24 17:00 – Updated: 2024-04-04 02:38reddcoin through 2.1.0.5 (a chain-based proof-of-stake cryptocurrency) allows a remote denial of service, exploitable by an attacker who acquires even a small amount of stake/coins in the system. The attacker sends invalid headers/blocks, which are stored on the victim's disk.
{
"affected": [],
"aliases": [
"CVE-2018-19164"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-11-05T21:15:00Z",
"severity": "HIGH"
},
"details": "reddcoin through 2.1.0.5 (a chain-based proof-of-stake cryptocurrency) allows a remote denial of service, exploitable by an attacker who acquires even a small amount of stake/coins in the system. The attacker sends invalid headers/blocks, which are stored on the victim\u0027s disk.",
"id": "GHSA-47r3-9wvw-vmvm",
"modified": "2024-04-04T02:38:16Z",
"published": "2022-05-24T17:00:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-19164"
},
{
"type": "WEB",
"url": "https://medium.com/%40dsl_uiuc/fake-stake-attacks-on-chain-based-proof-of-stake-cryptocurrencies-b8b05723f806"
},
{
"type": "WEB",
"url": "https://medium.com/@dsl_uiuc/fake-stake-attacks-on-chain-based-proof-of-stake-cryptocurrencies-b8b05723f806"
},
{
"type": "WEB",
"url": "http://fc19.ifca.ai/preproceedings/180-preproceedings.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-47VR-832F-CRM9
Vulnerability from github – Published: 2022-05-24 17:46 – Updated: 2022-08-06 00:00An uncontrolled resource consumption (memory leak) flaw was found in the ZeroMQ client in versions before 4.3.3 in src/pipe.cpp. This issue causes a client that connects to multiple malicious or compromised servers to crash. The highest threat from this vulnerability is to system availability.
{
"affected": [],
"aliases": [
"CVE-2021-20234"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-401"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-04-01T14:15:00Z",
"severity": "MODERATE"
},
"details": "An uncontrolled resource consumption (memory leak) flaw was found in the ZeroMQ client in versions before 4.3.3 in src/pipe.cpp. This issue causes a client that connects to multiple malicious or compromised servers to crash. The highest threat from this vulnerability is to system availability.",
"id": "GHSA-47vr-832f-crm9",
"modified": "2022-08-06T00:00:40Z",
"published": "2022-05-24T17:46:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/zeromq/libzmq/security/advisories/GHSA-wfr2-29gj-5w87"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20234"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921972"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-47VX-FQR5-J2GW
Vulnerability from github – Published: 2022-12-16 21:30 – Updated: 2022-12-22 22:03A vulnerability classified as problematic was found in Dromara HuTool up to 5.8.10. This vulnerability affects unknown code of the file cn.hutool.core.util.ZipUtil.java. The manipulation leads to resource consumption. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 5.8.11 is able to address this issue. It is recommended to upgrade the affected component.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "cn.hutool:hutool-core"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.8.11"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-4565"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-404"
],
"github_reviewed": true,
"github_reviewed_at": "2022-12-16T21:56:55Z",
"nvd_published_at": "2022-12-16T19:15:00Z",
"severity": "HIGH"
},
"details": "A vulnerability classified as problematic was found in Dromara HuTool up to 5.8.10. This vulnerability affects unknown code of the file cn.hutool.core.util.ZipUtil.java. The manipulation leads to resource consumption. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 5.8.11 is able to address this issue. It is recommended to upgrade the affected component.",
"id": "GHSA-47vx-fqr5-j2gw",
"modified": "2022-12-22T22:03:02Z",
"published": "2022-12-16T21:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4565"
},
{
"type": "WEB",
"url": "https://github.com/dromara/hutool/issues/2797"
},
{
"type": "PACKAGE",
"url": "https://github.com/dromara/hutool"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.215974"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "HuTool vulnerable to Uncontrolled Resource Consumption"
}
GHSA-4822-JVWX-W47H
Vulnerability from github – Published: 2022-04-01 18:16 – Updated: 2022-11-28 16:18Impact
Synapse before 1.52.0 with URL preview functionality enabled will attempt to generate URL previews for media stream URLs without properly limiting connection time. Connections will only be terminated after max_spider_size (default: 10M) bytes have been downloaded, which can in some cases lead to long-lived connections towards the streaming media server (for instance, Icecast).
This can cause excessive traffic and connections toward such servers if their stream URL is, for example, posted to a large room with many Synapse instances with URL preview enabled.
Patches
1.52.0 implements a timeout mechanism which will terminate URL preview connections after 30 seconds. Since generating URL previews for media streams is not supported and always fails, 1.53.0 additionally implements an allow list for content types for which Synapse will even attempt to generate a URL preview.
We recommend upgrading to 1.53.0 to fully resolve the issue.
Workarounds
Turn off URL preview functionality by setting url_preview_enabled: false in the Synapse configuration file.
References
- Patch (timeout): https://github.com/matrix-org/synapse/pull/11784
- Patch (content type allow list): https://github.com/matrix-org/synapse/pull/11936
For more information
If you have any questions or comments about this advisory, e-mail us at security@matrix.org.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "matrix-synapse"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.53.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-41952"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-772"
],
"github_reviewed": true,
"github_reviewed_at": "2022-04-01T18:16:42Z",
"nvd_published_at": "2022-11-22T16:15:00Z",
"severity": "MODERATE"
},
"details": "### Impact\n\nSynapse before 1.52.0 with URL preview functionality enabled will attempt to generate URL previews for media stream URLs without properly limiting connection time. Connections will only be terminated after `max_spider_size` (default: 10M) bytes have been downloaded, which can in some cases lead to long-lived connections towards the streaming media server (for instance, Icecast).\n\nThis can cause excessive traffic and connections toward such servers if their stream URL is, for example, posted to a large room with many Synapse instances with URL preview enabled.\n\n### Patches\n1.52.0 implements a timeout mechanism which will terminate URL preview connections after 30 seconds. Since generating URL previews for media streams is not supported and always fails, 1.53.0 additionally implements an allow list for content types for which Synapse will even attempt to generate a URL preview.\n\nWe recommend upgrading to 1.53.0 to fully resolve the issue.\n\n### Workarounds\nTurn off URL preview functionality by setting `url_preview_enabled: false` in the Synapse configuration file.\n\n### References\n- Patch (timeout): https://github.com/matrix-org/synapse/pull/11784\n- Patch (content type allow list): https://github.com/matrix-org/synapse/pull/11936\n\n### For more information\nIf you have any questions or comments about this advisory, e-mail us at security@matrix.org.\n",
"id": "GHSA-4822-jvwx-w47h",
"modified": "2022-11-28T16:18:30Z",
"published": "2022-04-01T18:16:42Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-4822-jvwx-w47h"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-41952"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/synapse/pull/11784"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/synapse/pull/11936"
},
{
"type": "PACKAGE",
"url": "https://github.com/matrix-org/synapse"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/synapse/releases/tag/v1.52.0"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/synapse/releases/tag/v1.53.0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
],
"summary": "Uncontrolled Resource Consumption in Matrix Synapse"
}
GHSA-482H-W5QP-GFXW
Vulnerability from github – Published: 2024-08-22 06:30 – Updated: 2024-08-22 15:31An issue was discovered in UCI IDOL 2 (aka uciIDOL or IDOL2) through 2.12. Due to improper input validation, improper deserialization, and improper restriction of operations within the bounds of a memory buffer, IDOL2 is vulnerable to Denial-of-Service (DoS) attacks and possibly remote code execution. There is an access violation and EIP overwrite after five logins.
{
"affected": [],
"aliases": [
"CVE-2024-45166"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-22T04:15:24Z",
"severity": "CRITICAL"
},
"details": "An issue was discovered in UCI IDOL 2 (aka uciIDOL or IDOL2) through 2.12. Due to improper input validation, improper deserialization, and improper restriction of operations within the bounds of a memory buffer, IDOL2 is vulnerable to Denial-of-Service (DoS) attacks and possibly remote code execution. There is an access violation and EIP overwrite after five logins.",
"id": "GHSA-482h-w5qp-gfxw",
"modified": "2024-08-22T15:31:18Z",
"published": "2024-08-22T06:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45166"
},
{
"type": "WEB",
"url": "https://uci.de/download/idol2-client.html"
},
{
"type": "WEB",
"url": "https://uci.de/products/index.html"
},
{
"type": "WEB",
"url": "https://www.syss.de/en/responsible-disclosure-policy"
},
{
"type": "WEB",
"url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2024-050.txt"
},
{
"type": "WEB",
"url": "http://download.uci.de/idol2/idol2Client_2_12.exe"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-482R-2G94-J6QR
Vulnerability from github – Published: 2022-05-24 17:20 – Updated: 2022-05-24 17:20In Parse_art of eas_mdls.c, there is possible resource exhaustion due to a missing bounds check. This could lead to remote denial of service with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-127312550
{
"affected": [],
"aliases": [
"CVE-2020-0172"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-06-11T15:15:00Z",
"severity": "MODERATE"
},
"details": "In Parse_art of eas_mdls.c, there is possible resource exhaustion due to a missing bounds check. This could lead to remote denial of service with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-127312550",
"id": "GHSA-482r-2g94-j6qr",
"modified": "2022-05-24T17:20:14Z",
"published": "2022-05-24T17:20:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0172"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/pixel/2020-06-01"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-4846-7XWG-PW5M
Vulnerability from github – Published: 2026-07-21 12:33 – Updated: 2026-07-22 21:31A flaw was found in libssh. A remote authenticated peer can advertise a zero maximum packet size in SSH_MSG_CHANNEL_OPEN, causing later channel writes to loop indefinitely and consume CPU, leading to denial of service.
{
"affected": [],
"aliases": [
"CVE-2026-59843"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-21T12:18:57Z",
"severity": "MODERATE"
},
"details": "A flaw was found in libssh. A remote authenticated peer can advertise a zero maximum packet size in SSH_MSG_CHANNEL_OPEN, causing later channel writes to loop indefinitely and consume CPU, leading to denial of service.",
"id": "GHSA-4846-7xwg-pw5m",
"modified": "2026-07-22T21:31:49Z",
"published": "2026-07-21T12:33:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59843"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:42922"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-59843"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2498176"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
Design throttling mechanisms into the system architecture. The best protection is to limit the amount of resources that an unauthorized user can cause to be expended. A strong authentication and access control model will help prevent such attacks from occurring in the first place. The login application should be protected against DoS attacks as much as possible. Limiting the database access, perhaps by caching result sets, can help minimize the resources expended. To further limit the potential for a DoS attack, consider tracking the rate of requests received from users and blocking requests that exceed a defined rate threshold.
Mitigation
- Mitigation of resource exhaustion attacks requires that the target system either:
- The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
- The second solution is simply difficult to effectively institute -- and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.
- recognizes the attack and denies that user further access for a given amount of time, or
- uniformly throttles all requests in order to make it more difficult to consume resources more quickly than they can again be freed.
Mitigation
Ensure that protocols have specific limits of scale placed on them.
Mitigation
Ensure that all failures in resource allocation place the system into a safe posture.
CAPEC-147: XML Ping of the Death
An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
CAPEC-227: Sustained Client Engagement
An adversary attempts to deny legitimate users access to a resource by continually engaging a specific resource in an attempt to keep the resource tied up as long as possible. The adversary's primary goal is not to crash or flood the target, which would alert defenders; rather it is to repeatedly perform actions or abuse algorithmic flaws such that a given resource is tied up and not available to a legitimate user. By carefully crafting a requests that keep the resource engaged through what is seemingly benign requests, legitimate users are limited or completely denied access to the resource.
CAPEC-492: Regular Expression Exponential Blowup
An adversary may execute an attack on a program that uses a poor Regular Expression(Regex) implementation by choosing input that results in an extreme situation for the Regex. A typical extreme situation operates at exponential time compared to the input size. This is due to most implementations using a Nondeterministic Finite Automaton(NFA) state machine to be built by the Regex algorithm since NFA allows backtracking and thus more complex regular expressions.