CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5569 vulnerabilities reference this CWE, most recent first.
GHSA-5W86-C3RQ-VJJ7
Vulnerability from github – Published: 2026-06-15 20:46 – Updated: 2026-06-15 20:46Summary
RedisArrayAggregator pre-allocates ArrayList with initial capacity equal to the RESP array element count declared in an array header. That count is taken from the wire before the corresponding child messages exist. A small malicious header can claim a huge initial capacity.
Details
The aggregator starts a new aggregation level when it receives an ArrayHeaderRedisMessage. For positive lengths it pushes AggregateState, whose constructor runs new ArrayList<>(length). No configurable maximum is applied in this handler, and the peer does not need to supply the array elements for the backing array allocation to occur.
In the same pipeline, RedisDecoder enforces RedisConstants.REDIS_MESSAGE_MAX_LENGTH for bulk string lengths but does not apply that cap to array header lengths. Declared array sizes can therefore be extremely large while still passing decoding, and the aggregator immediately attempts Object[] reservation.
io.netty.handler.codec.redis.RedisDecoder#decodeLength io.netty.handler.codec.redis.RedisArrayAggregator#decodeRedisArrayHeader
Impact
Availability / resource exhaustion via unbounded pre-allocation from untrusted RESP array headers.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 4.2.14.Final"
},
"package": {
"ecosystem": "Maven",
"name": "io.netty:netty-codec-redis"
},
"ranges": [
{
"events": [
{
"introduced": "4.2.0.Final"
},
{
"fixed": "4.2.15.Final"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 4.1.134.Final"
},
"package": {
"ecosystem": "Maven",
"name": "io.netty:netty-codec-redis"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.1.135.Final"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-50011"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-15T20:46:16Z",
"nvd_published_at": "2026-06-12T16:16:31Z",
"severity": "HIGH"
},
"details": "### Summary\nRedisArrayAggregator pre-allocates ArrayList with initial capacity equal to the RESP array element count declared in an array header. That count is taken from the wire before the corresponding child messages exist. A small malicious header can claim a huge initial capacity.\n\n### Details\nThe aggregator starts a new aggregation level when it receives an ArrayHeaderRedisMessage. For positive lengths it pushes AggregateState, whose constructor runs `new ArrayList\u003c\u003e(length)`. No configurable maximum is applied in this handler, and the peer does not need to supply the array elements for the backing array allocation to occur.\n\nIn the same pipeline, RedisDecoder enforces RedisConstants.REDIS_MESSAGE_MAX_LENGTH for bulk string lengths but does not apply that cap to array header lengths. Declared array sizes can therefore be extremely large while still passing decoding, and the aggregator immediately attempts Object[] reservation.\n\nio.netty.handler.codec.redis.RedisDecoder#decodeLength\nio.netty.handler.codec.redis.RedisArrayAggregator#decodeRedisArrayHeader\n\n### Impact\nAvailability / resource exhaustion via unbounded pre-allocation from untrusted RESP array headers.",
"id": "GHSA-5w86-c3rq-vjj7",
"modified": "2026-06-15T20:46:16Z",
"published": "2026-06-15T20:46:16Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/netty/netty/security/advisories/GHSA-5w86-c3rq-vjj7"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50011"
},
{
"type": "PACKAGE",
"url": "https://github.com/netty/netty"
},
{
"type": "WEB",
"url": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final"
},
{
"type": "WEB",
"url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"
}
],
"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": "Netty: Unbounded pre-allocation in RedisArrayAggregator from RESP array length"
}
GHSA-5W86-J94C-54Q5
Vulnerability from github – Published: 2023-08-17 15:30 – Updated: 2024-04-04 07:01A use-after-free flaw was found in btrfs_get_dev_args_from_path in fs/btrfs/volumes.c in btrfs file-system in the Linux Kernel. This flaw allows a local attacker with special privileges to cause a system crash or leak internal kernel information
{
"affected": [],
"aliases": [
"CVE-2023-4394"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-17T13:15:11Z",
"severity": "MODERATE"
},
"details": "A use-after-free flaw was found in btrfs_get_dev_args_from_path in fs/btrfs/volumes.c in btrfs file-system in the Linux Kernel. This flaw allows a local attacker with special privileges to cause a system crash or leak internal kernel information",
"id": "GHSA-5w86-j94c-54q5",
"modified": "2024-04-04T07:01:41Z",
"published": "2023-08-17T15:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4394"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2023-4394"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2219263"
},
{
"type": "WEB",
"url": "https://patchwork.kernel.org/project/linux-btrfs/patch/20220815151606.3479183-1-r33s3n6@gmail.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5WCX-3FFQ-75XQ
Vulnerability from github – Published: 2022-05-14 02:59 – Updated: 2022-05-14 02:59F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, or 11.6.0-11.6.3.1 virtual servers with HTTP/2 profiles enabled are vulnerable to "HPACK Bomb".
{
"affected": [],
"aliases": [
"CVE-2018-5530"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-25T14:29:00Z",
"severity": "HIGH"
},
"details": "F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, or 11.6.0-11.6.3.1 virtual servers with HTTP/2 profiles enabled are vulnerable to \"HPACK Bomb\".",
"id": "GHSA-5wcx-3ffq-75xq",
"modified": "2022-05-14T02:59:06Z",
"published": "2022-05-14T02:59:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-5530"
},
{
"type": "WEB",
"url": "https://support.f5.com/csp/article/K45611803"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/104908"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5WFC-HJRC-GQ87
Vulnerability from github – Published: 2023-06-14 15:30 – Updated: 2026-05-20 22:35An issue was discovered hjson through 3.0.0 allows attackers to cause a denial of service or other unspecified impacts via crafted objects that deeply nested structures.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 3.0.0"
},
"package": {
"ecosystem": "Maven",
"name": "org.hjson:hjson"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "laktak/hjson"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/hjson/hjson-go/v4"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.5.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-34620"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-674",
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2023-06-14T20:38:48Z",
"nvd_published_at": "2023-06-14T14:15:10Z",
"severity": "HIGH"
},
"details": "An issue was discovered hjson through 3.0.0 allows attackers to cause a denial of service or other unspecified impacts via crafted objects that deeply nested structures.",
"id": "GHSA-5wfc-hjrc-gq87",
"modified": "2026-05-20T22:35:10Z",
"published": "2023-06-14T15:30:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-34620"
},
{
"type": "WEB",
"url": "https://github.com/hjson/hjson-java/issues/24"
},
{
"type": "WEB",
"url": "https://github.com/hjson/hjson-cpp/pull/54"
},
{
"type": "WEB",
"url": "https://github.com/hjson/hjson-go/pull/67"
},
{
"type": "WEB",
"url": "https://github.com/hjson/hjson-php/pull/45"
},
{
"type": "WEB",
"url": "https://github.com/hjson/hjson-go/commit/326599cebc6ef759892f473bf1439b98466a99fa"
},
{
"type": "WEB",
"url": "https://github.com/hjson/hjson-php/commit/2d1b8b4b158a8d841f3a228f267c7cd84fe5a4fa"
}
],
"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": "hjson stack exhaustion vulnerability"
}
GHSA-5WJ2-97HM-RJXP
Vulnerability from github – Published: 2022-05-14 02:04 – Updated: 2022-05-14 02:04Memory leak in the ReadPSDLayers function in coders/psd.c in ImageMagick 6.8.9.9 allows remote attackers to cause a denial of service (memory consumption) via unspecified vectors.
{
"affected": [],
"aliases": [
"CVE-2014-9842"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-03-20T16:59:00Z",
"severity": "HIGH"
},
"details": "Memory leak in the ReadPSDLayers function in coders/psd.c in ImageMagick 6.8.9.9 allows remote attackers to cause a denial of service (memory consumption) via unspecified vectors.",
"id": "GHSA-5wj2-97hm-rjxp",
"modified": "2022-05-14T02:04:38Z",
"published": "2022-05-14T02:04:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2014-9842"
},
{
"type": "WEB",
"url": "https://anonscm.debian.org/cgit/collab-maint/imagemagick.git/commit/?h=debian-patches/6.8.9.9-4-for-upstream\u0026id=f9ef11671c41da4cf973d0d880af1cdfbd127860"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1343500"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00002.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00009.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00011.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00018.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2016/06/02/13"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5WMX-573V-2QWQ
Vulnerability from github – Published: 2026-03-05 15:30 – Updated: 2026-06-06 00:53Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "Markdown"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.8.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-69534"
],
"database_specific": {
"cwe_ids": [
"CWE-248",
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-05T21:59:47Z",
"nvd_published_at": "2026-03-05T15:16:11Z",
"severity": "MODERATE"
},
"details": "Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions.",
"id": "GHSA-5wmx-573v-2qwq",
"modified": "2026-06-06T00:53:00Z",
"published": "2026-03-05T15:30:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-69534"
},
{
"type": "WEB",
"url": "https://github.com/Python-Markdown/markdown/issues/1534"
},
{
"type": "WEB",
"url": "https://github.com/Python-Markdown/markdown/pull/1535"
},
{
"type": "WEB",
"url": "https://github.com/Python-Markdown/markdown"
},
{
"type": "WEB",
"url": "https://github.com/Python-Markdown/markdown/actions/runs/15736122892"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown/PYSEC-2026-89.yaml"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/03/06/4"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
"type": "CVSS_V4"
}
],
"summary": "Python-Markdown has an Uncaught Exception"
}
GHSA-5WPJ-3HPX-GVFQ
Vulnerability from github – Published: 2022-05-24 17:18 – Updated: 2022-05-24 17:18A Denial of Service vulnerability in MuleSoft Mule CE/EE 3.8.x, 3.9.x, and 4.x released before April 7, 2020, could allow remote attackers to submit data which can lead to resource exhaustion.
{
"affected": [],
"aliases": [
"CVE-2020-6937"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-05-29T22:15:00Z",
"severity": "MODERATE"
},
"details": "A Denial of Service vulnerability in MuleSoft Mule CE/EE 3.8.x, 3.9.x, and 4.x released before April 7, 2020, could allow remote attackers to submit data which can lead to resource exhaustion.",
"id": "GHSA-5wpj-3hpx-gvfq",
"modified": "2022-05-24T17:18:54Z",
"published": "2022-05-24T17:18:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-6937"
},
{
"type": "WEB",
"url": "https://help.salesforce.com/articleView?id=000353701\u0026language=en_US\u0026type=1\u0026mode=1"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-5WQ9-96X8-3HQ5
Vulnerability from github – Published: 2024-08-15 18:31 – Updated: 2024-08-16 15:31Tenda FH1206 v02.03.01.35 was discovered to contain a stack overflow via the delno parameter in the fromPptpUserSetting function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.
{
"affected": [],
"aliases": [
"CVE-2024-42981"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-15T17:15:21Z",
"severity": "HIGH"
},
"details": "Tenda FH1206 v02.03.01.35 was discovered to contain a stack overflow via the delno parameter in the fromPptpUserSetting function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.",
"id": "GHSA-5wq9-96x8-3hq5",
"modified": "2024-08-16T15:31:41Z",
"published": "2024-08-15T18:31:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42981"
},
{
"type": "WEB",
"url": "https://github.com/TTTJJJWWW/AHU-IoT-vulnerable/blob/main/Tenda/FH1206/fromPptpUserSetting.md"
}
],
"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-5WQF-H3R3-GXVH
Vulnerability from github – Published: 2022-05-13 01:09 – Updated: 2023-12-21 21:52Apache CXF before 2.6.14 and 2.7.x before 2.7.11 allows remote attackers to cause a denial of service (memory consumption) via a large request with the Content-Type set to text/html to a SOAP endpoint, which triggers an error.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.cxf:cxf-core"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.14"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.cxf:cxf-core"
},
"ranges": [
{
"events": [
{
"introduced": "2.7.0"
},
{
"fixed": "2.7.11"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2014-0109"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2022-07-07T23:01:36Z",
"nvd_published_at": "2014-05-08T14:29:00Z",
"severity": "MODERATE"
},
"details": "Apache CXF before 2.6.14 and 2.7.x before 2.7.11 allows remote attackers to cause a denial of service (memory consumption) via a large request with the Content-Type set to text/html to a SOAP endpoint, which triggers an error.",
"id": "GHSA-5wqf-h3r3-gxvh",
"modified": "2023-12-21T21:52:09Z",
"published": "2022-05-13T01:09:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2014-0109"
},
{
"type": "WEB",
"url": "https://github.com/apache/cxf/commit/6dd839afbb4d834ed668738bd89e7775c1cf2f9d"
},
{
"type": "WEB",
"url": "https://github.com/apache/cxf/commit/a5f907b1da89453919218ba0bf70be0d8b6810c5"
},
{
"type": "WEB",
"url": "https://cxf.apache.org/security-advisories.data/CVE-2014-0109.txt.asc"
},
{
"type": "WEB",
"url": "https://github.com/apache/cxf"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r36e44ffc1a9b365327df62cdfaabe85b9a5637de102cea07d79b2dbf@%3Ccommits.cxf.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rc774278135816e7afc943dc9fc78eb0764f2c84a2b96470a0187315c@%3Ccommits.cxf.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rd49aabd984ed540c8ff7916d4d79405f3fa311d2fdbcf9ed307839a6@%3Ccommits.cxf.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4@%3Ccommits.cxf.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e@%3Ccommits.cxf.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rff42cfa5e7d75b7c1af0e37589140a8f1999e578a75738740b244bd4@%3Ccommits.cxf.apache.org%3E"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2014-1351.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2015-0850.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2015-0851.html"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "Uncontrolled Resource Consumption in Apache CXF"
}
GHSA-5WRM-M47R-JV84
Vulnerability from github – Published: 2025-04-01 00:30 – Updated: 2025-11-04 00:32The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.4. An app may be able to cause unexpected system termination.
{
"affected": [],
"aliases": [
"CVE-2025-24269"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-31T23:15:23Z",
"severity": "CRITICAL"
},
"details": "The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.4. An app may be able to cause unexpected system termination.",
"id": "GHSA-5wrm-m47r-jv84",
"modified": "2025-11-04T00:32:22Z",
"published": "2025-04-01T00:30:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-24269"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/122373"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2025/Apr/8"
}
],
"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"
}
]
}
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.