Common Weakness Enumeration
CWE-787
Allowed-with-ReviewOut-of-bounds Write
Abstraction: Base · Status: Draft
The product writes data past the end, or before the beginning, of the intended buffer.
15198 vulnerabilities reference this CWE, most recent first.
CVE-2021-3546 (GCVE-0-2021-3546)
Vulnerability from cvelistv5 – Published: 2021-06-02 13:30 – Updated: 2024-08-03 17:01
VLAI
EPSS
VEX
Summary
An out-of-bounds write vulnerability was found in the virtio vhost-user GPU device (vhost-user-gpu) of QEMU in versions up to and including 6.0. The flaw occurs while processing the 'VIRTIO_GPU_CMD_GET_CAPSET' command from the guest. It could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service condition, or potential code execution with the privileges of the QEMU process.
Severity
No CVSS data available.
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2021/05/31/1 | mailing-listx_refsource_MLIST |
| https://bugzilla.redhat.com/show_bug.cgi?id=1958978 | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021072… | x_refsource_CONFIRM |
| https://www.debian.org/security/2021/dsa-4980 | vendor-advisoryx_refsource_DEBIAN |
| https://security.gentoo.org/glsa/202208-27 | vendor-advisoryx_refsource_GENTOO |
Impacted products
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CVE-2021-3517 (GCVE-0-2021-3517)
Vulnerability from cvelistv5 – Published: 2021-05-19 13:45 – Updated: 2025-12-02 21:34
VLAI
EPSS
VEX
Summary
There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
13 references
| URL | Tags |
|---|---|
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://bugzilla.redhat.com/show_bug.cgi?id=1954232 | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.apache.org/thread.html/rf4c02775860… | mailing-listx_refsource_MLIST |
| https://lists.apache.org/thread.html/r58af02e294b… | mailing-listx_refsource_MLIST |
| https://security.gentoo.org/glsa/202107-05 | vendor-advisoryx_refsource_GENTOO |
| https://security.netapp.com/advisory/ntap-2021062… | x_refsource_CONFIRM |
| https://www.oracle.com/security-alerts/cpuoct2021.html | x_refsource_MISC |
| https://www.oracle.com/security-alerts/cpujan2022.html | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021102… | x_refsource_CONFIRM |
| https://www.oracle.com/security-alerts/cpuapr2022.html | x_refsource_MISC |
| https://www.oracle.com/security-alerts/cpujul2022.html | x_refsource_MISC |
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CVE-2021-3501 (GCVE-0-2021-3501)
Vulnerability from cvelistv5 – Published: 2021-05-05 22:31 – Updated: 2024-08-03 16:53
VLAI
EPSS
VEX
Summary
A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.
Severity
No CVSS data available.
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1950136 | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021061… | x_refsource_CONFIRM |
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CVE-2021-3500 (GCVE-0-2021-3500)
Vulnerability from cvelistv5 – Published: 2021-06-24 18:02 – Updated: 2024-08-03 16:53
VLAI
EPSS
VEX
Summary
A flaw was found in djvulibre-3.5.28 and earlier. A Stack overflow in function DJVU::DjVuDocument::get_djvu_file() via crafted djvu file may lead to application crash and other consequences.
Severity
No CVSS data available.
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1943685 | x_refsource_MISC |
| https://www.debian.org/security/2021/dsa-5032 | vendor-advisoryx_refsource_DEBIAN |
Impacted products
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CVE-2021-3490 (GCVE-0-2021-3490)
Vulnerability from cvelistv5 – Published: 2021-06-04 01:40 – Updated: 2024-09-16 22:29
VLAI
EPSS
VEX
Title
Linux kernel eBPF bitwise ops ALU32 bounds tracking
Summary
The eBPF ALU32 bounds tracking for bitwise ops (AND, OR and XOR) in the Linux kernel did not properly update 32-bit bounds, which could be turned into out of bounds reads and writes in the Linux kernel and therefore, arbitrary code execution. This issue was fixed via commit 049c4e13714e ("bpf: Fix alu32 const subreg bound tracking on bitwise operations") (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. The AND/OR issues were introduced by commit 3f50f132d840 ("bpf: Verifier, do explicit ALU32 bounds tracking") (5.7-rc1) and the XOR variant was introduced by 2921c90d4718 ("bpf:Fix a verifier failure with xor") ( 5.10-rc1).
Severity
7.8 (High)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://ubuntu.com/security/notices/USN-4950-1 | vendor-advisoryx_refsource_UBUNTU |
| https://ubuntu.com/security/notices/USN-4949-1 | vendor-advisoryx_refsource_UBUNTU |
| https://www.openwall.com/lists/oss-security/2021/… | mailing-listx_refsource_MLIST |
| https://git.kernel.org/pub/scm/linux/kernel/git/b… | x_refsource_MISC |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021071… | x_refsource_CONFIRM |
| http://packetstormsecurity.com/files/164015/Linux… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux kernel |
Affected:
trunk , < v5.13-rc4
(custom)
Affected: linux-5.12.y , < v5.12.4 (custom) Affected: linux-5.11.y , < v5.11.21 (custom) Affected: linux-5.10.y , < v5.10.37 (custom) Affected: v5.7-rc1 , < 5.7* (custom) |
Date Public
2021-05-11 00:00
Credits
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CVE-2021-3489 (GCVE-0-2021-3489)
Vulnerability from cvelistv5 – Published: 2021-06-04 01:40 – Updated: 2024-09-16 20:21
VLAI
EPSS
VEX
Title
Linux kernel eBPF RINGBUF map oversized allocation
Summary
The eBPF RINGBUF bpf_ringbuf_reserve() function in the Linux kernel did not check that the allocated size was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee ("bpf, ringbuf: Deny reserve of buffers larger than ringbuf") (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced via 457f44363a88 ("bpf: Implement BPF ring buffer and verifier support for it") (v5.8-rc1).
Severity
7.8 (High)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2021/… | mailing-listx_refsource_MLIST |
| https://git.kernel.org/pub/scm/linux/kernel/git/b… | x_refsource_MISC |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
| https://ubuntu.com/security/notices/USN-4950-1 | vendor-advisoryx_refsource_UBUNTU |
| https://ubuntu.com/security/notices/USN-4949-1 | vendor-advisoryx_refsource_UBUNTU |
| https://security.netapp.com/advisory/ntap-2021071… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux kernel |
Affected:
trunk , < v5.13-rc4
(custom)
Affected: linux-5.12.y , < v5.12.4 (custom) Affected: linux-5.11.y , < v5.11.21 (custom) Affected: linux-5.10.y , < v5.10.37 (custom) Affected: v5.8 , < 5.8* (custom) |
Date Public
2021-05-11 00:00
Credits
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CVE-2021-3405 (GCVE-0-2021-3405)
Vulnerability from cvelistv5 – Published: 2021-02-23 19:05 – Updated: 2024-08-03 16:53
VLAI
EPSS
VEX
Summary
A flaw was found in libebml before 1.4.2. A heap overflow bug exists in the implementation of EbmlString::ReadData and EbmlUnicodeString::ReadData in libebml.
Severity
No CVSS data available.
CWE
Assigner
References
6 references
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|---|---|
| https://github.com/Matroska-Org/libebml/issues/74 | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://security.gentoo.org/glsa/202208-21 | vendor-advisoryx_refsource_GENTOO |
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CVE-2021-3330 (GCVE-0-2021-3330)
Vulnerability from cvelistv5 – Published: 2021-10-12 21:50 – Updated: 2024-09-17 01:00
VLAI
EPSS
VEX
Title
RCE/DOS: Linked-list corruption leading to large out-of-bounds write while sorting for forged fragment list in Zephyr
Summary
RCE/DOS: Linked-list corruption leading to large out-of-bounds write while sorting for forged fragment list in Zephyr. Zephyr versions >= >=2.4.0 contain Out-of-bounds Write (CWE-787). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fj4r-373f-9456
Severity
7.1 (High)
CWE
- CWE-787 - Out-of-bounds Write (CWE-787)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| http://github.com/zephyrproject-rtos/zephyr/secur… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zephyrproject-rtos | zephyr |
Affected:
>=2.4.0 , < unspecified
(custom)
|
Date Public
2021-04-20 00:00
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CVE-2021-1590 (GCVE-0-2021-1590)
Vulnerability from cvelistv5 – Published: 2021-08-25 19:11 – Updated: 2024-11-07 22:02
VLAI
EPSS
VEX
Title
Cisco NX-OS Software system login block-for Denial of Service Vulnerability
Summary
A vulnerability in the implementation of the system login block-for command for Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a login process to unexpectedly restart, causing a denial of service (DoS) condition. This vulnerability is due to a logic error in the implementation of the system login block-for command when an attack is detected and acted upon. An attacker could exploit this vulnerability by performing a brute-force login attack on an affected device. A successful exploit could allow the attacker to cause a login process to reload, which could result in a delay during authentication to the affected device.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco NX-OS Software |
Affected:
n/a
|
Date Public
2021-08-25 00:00
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CVE-2021-1573 (GCVE-0-2021-1573)
Vulnerability from cvelistv5 – Published: 2022-01-11 18:55 – Updated: 2024-11-06 16:47
VLAI
EPSS
VEX
Title
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Denial of Service Vulnerability
Summary
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to improper input validation when parsing HTTPS requests. An attacker could exploit this vulnerability by sending a malicious HTTPS request to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Adaptive Security Appliance Software |
Affected:
unspecified , < 6.4.0.13
(custom)
|
|
| Cisco | Cisco Firepower Threat Defense Software |
Affected:
unspecified , < 6.6.5
(custom)
|
Date Public
2021-10-27 00:00
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Mitigation MIT-3
Requirements
Strategy: Language Selection
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
- Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
Mitigation MIT-4.1
Architecture and Design
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
Mitigation MIT-10
Operation
Build and Compilation
Strategy: Environment Hardening
- Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
- D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Mitigation MIT-9
Implementation
- Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that the buffer is as large as specified.
- When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
- Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
Mitigation MIT-11
Operation
Build and Compilation
Strategy: Environment Hardening
- Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
- Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
- For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
Mitigation MIT-12
Operation
Strategy: Environment Hardening
- Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
- For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
Mitigation MIT-13
Implementation
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
No CAPEC attack patterns related to this CWE.