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.
15535 vulnerabilities reference this CWE, most recent first.
GHSA-92WP-R7HM-42G7
Vulnerability from github – Published: 2023-03-03 22:50 – Updated: 2023-03-03 22:50Impact
It's possible to make the farm unusable by adding an object to a page with a huge number (e.g. 67108863). This will most of the time fill the memory allocated to XWiki and make it unusable every time this document is manipulated.
Patches
It has been patched in XWiki 14.0
Workarounds
There is no workaround.
References
https://jira.xwiki.org/browse/XWIKI-19223
For more information
If you have any questions or comments about this advisory: * Open an issue in Jira XWiki * Email us at our security mailing list
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.xwiki.platform:xwiki-platform-oldcore"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.0-rc-1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-26470"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2023-03-03T22:50:41Z",
"nvd_published_at": "2023-03-02T19:15:00Z",
"severity": "MODERATE"
},
"details": "### Impact\n\nIt\u0027s possible to make the farm unusable by adding an object to a page with a huge number (e.g. 67108863). This will most of the time fill the memory allocated to XWiki and make it unusable every time this document is manipulated.\n\n### Patches\nIt has been patched in XWiki 14.0\n\n### Workarounds\nThere is no workaround.\n\n### References\nhttps://jira.xwiki.org/browse/XWIKI-19223\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [Jira XWiki](https://jira.xwiki.org)\n* Email us at [our security mailing list](mailto:security@xwiki.org)\n",
"id": "GHSA-92wp-r7hm-42g7",
"modified": "2023-03-03T22:50:41Z",
"published": "2023-03-03T22:50:41Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-92wp-r7hm-42g7"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26470"
},
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-platform/commit/04e5a89d2879b160cdfaea846024d3d9c1a525e6"
},
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-platform/commit/db3d1c62fc5fb59fefcda3b86065d2d362f55164"
},
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-platform/commit/fdfce062642b0ac062da5cda033d25482f4600fa"
},
{
"type": "PACKAGE",
"url": "https://github.com/xwiki/xwiki-platform"
},
{
"type": "WEB",
"url": "https://jira.xwiki.org/browse/XWIKI-19223"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "XWiki Platform subject to Uncontrolled Resource Consumption"
}
GHSA-932H-84VW-P6CW
Vulnerability from github – Published: 2024-06-20 12:31 – Updated: 2026-01-19 15:30In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: Avoid field-overflowing memcpy()
In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memcpy(), memmove(), and memset(), avoid intentionally writing across neighboring fields.
Use flexible arrays instead of zero-element arrays (which look like they are always overflowing) and split the cross-field memcpy() into two halves that can be appropriately bounds-checked by the compiler.
We were doing:
#define ETH_HLEN 14
#define VLAN_HLEN 4
...
#define MLX5E_XDP_MIN_INLINE (ETH_HLEN + VLAN_HLEN)
...
struct mlx5e_tx_wqe *wqe = mlx5_wq_cyc_get_wqe(wq, pi);
...
struct mlx5_wqe_eth_seg *eseg = &wqe->eth;
struct mlx5_wqe_data_seg *dseg = wqe->data;
...
memcpy(eseg->inline_hdr.start, xdptxd->data, MLX5E_XDP_MIN_INLINE);
target is wqe->eth.inline_hdr.start (which the compiler sees as being 2 bytes in size), but copying 18, intending to write across start (really vlan_tci, 2 bytes). The remaining 16 bytes get written into wqe->data[0], covering byte_count (4 bytes), lkey (4 bytes), and addr (8 bytes).
struct mlx5e_tx_wqe { struct mlx5_wqe_ctrl_seg ctrl; / 0 16 / struct mlx5_wqe_eth_seg eth; / 16 16 / struct mlx5_wqe_data_seg data[]; / 32 0 /
/* size: 32, cachelines: 1, members: 3 */
/* last cacheline: 32 bytes */
};
struct mlx5_wqe_eth_seg { u8 swp_outer_l4_offset; / 0 1 / u8 swp_outer_l3_offset; / 1 1 / u8 swp_inner_l4_offset; / 2 1 / u8 swp_inner_l3_offset; / 3 1 / u8 cs_flags; / 4 1 / u8 swp_flags; / 5 1 / __be16 mss; / 6 2 / __be32 flow_table_metadata; / 8 4 / union { struct { __be16 sz; / 12 2 / u8 start[2]; / 14 2 / } inline_hdr; / 12 4 / struct { __be16 type; / 12 2 / __be16 vlan_tci; / 14 2 / } insert; / 12 4 / __be32 trailer; / 12 4 / }; / 12 4 /
/* size: 16, cachelines: 1, members: 9 */
/* last cacheline: 16 bytes */
};
struct mlx5_wqe_data_seg { __be32 byte_count; / 0 4 / __be32 lkey; / 4 4 / __be64 addr; / 8 8 /
/* size: 16, cachelines: 1, members: 3 */
/* last cacheline: 16 bytes */
};
So, split the memcpy() so the compiler can reason about the buffer sizes.
"pahole" shows no size nor member offset changes to struct mlx5e_tx_wqe nor struct mlx5e_umr_wqe. "objdump -d" shows no meaningful object code changes (i.e. only source line number induced differences and optimizations).
{
"affected": [],
"aliases": [
"CVE-2022-48744"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-20T12:15:12Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Avoid field-overflowing memcpy()\n\nIn preparation for FORTIFY_SOURCE performing compile-time and run-time\nfield bounds checking for memcpy(), memmove(), and memset(), avoid\nintentionally writing across neighboring fields.\n\nUse flexible arrays instead of zero-element arrays (which look like they\nare always overflowing) and split the cross-field memcpy() into two halves\nthat can be appropriately bounds-checked by the compiler.\n\nWe were doing:\n\n\t#define ETH_HLEN 14\n\t#define VLAN_HLEN 4\n\t...\n\t#define MLX5E_XDP_MIN_INLINE (ETH_HLEN + VLAN_HLEN)\n\t...\n struct mlx5e_tx_wqe *wqe = mlx5_wq_cyc_get_wqe(wq, pi);\n\t...\n struct mlx5_wqe_eth_seg *eseg = \u0026wqe-\u003eeth;\n struct mlx5_wqe_data_seg *dseg = wqe-\u003edata;\n\t...\n\tmemcpy(eseg-\u003einline_hdr.start, xdptxd-\u003edata, MLX5E_XDP_MIN_INLINE);\n\ntarget is wqe-\u003eeth.inline_hdr.start (which the compiler sees as being\n2 bytes in size), but copying 18, intending to write across start\n(really vlan_tci, 2 bytes). The remaining 16 bytes get written into\nwqe-\u003edata[0], covering byte_count (4 bytes), lkey (4 bytes), and addr\n(8 bytes).\n\nstruct mlx5e_tx_wqe {\n struct mlx5_wqe_ctrl_seg ctrl; /* 0 16 */\n struct mlx5_wqe_eth_seg eth; /* 16 16 */\n struct mlx5_wqe_data_seg data[]; /* 32 0 */\n\n /* size: 32, cachelines: 1, members: 3 */\n /* last cacheline: 32 bytes */\n};\n\nstruct mlx5_wqe_eth_seg {\n u8 swp_outer_l4_offset; /* 0 1 */\n u8 swp_outer_l3_offset; /* 1 1 */\n u8 swp_inner_l4_offset; /* 2 1 */\n u8 swp_inner_l3_offset; /* 3 1 */\n u8 cs_flags; /* 4 1 */\n u8 swp_flags; /* 5 1 */\n __be16 mss; /* 6 2 */\n __be32 flow_table_metadata; /* 8 4 */\n union {\n struct {\n __be16 sz; /* 12 2 */\n u8 start[2]; /* 14 2 */\n } inline_hdr; /* 12 4 */\n struct {\n __be16 type; /* 12 2 */\n __be16 vlan_tci; /* 14 2 */\n } insert; /* 12 4 */\n __be32 trailer; /* 12 4 */\n }; /* 12 4 */\n\n /* size: 16, cachelines: 1, members: 9 */\n /* last cacheline: 16 bytes */\n};\n\nstruct mlx5_wqe_data_seg {\n __be32 byte_count; /* 0 4 */\n __be32 lkey; /* 4 4 */\n __be64 addr; /* 8 8 */\n\n /* size: 16, cachelines: 1, members: 3 */\n /* last cacheline: 16 bytes */\n};\n\nSo, split the memcpy() so the compiler can reason about the buffer\nsizes.\n\n\"pahole\" shows no size nor member offset changes to struct mlx5e_tx_wqe\nnor struct mlx5e_umr_wqe. \"objdump -d\" shows no meaningful object\ncode changes (i.e. only source line number induced differences and\noptimizations).",
"id": "GHSA-932h-84vw-p6cw",
"modified": "2026-01-19T15:30:31Z",
"published": "2024-06-20T12:31:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48744"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/49bcbe531f79fc35bb10020f7695f9f01e4f0ca8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8fbdf8c8b8ab82beab882175157650452c46493e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ad5185735f7dab342fdd0dd41044da4c9ccfef67"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-932M-CHC4-849F
Vulnerability from github – Published: 2023-02-10 12:30 – Updated: 2023-02-17 18:30Dell PowerScale OneFS, versions 8.2.x-9.3.x, contain a heap-based buffer overflow. A local privileged malicious user could potentially exploit this vulnerability, leading to system takeover. This impacts compliance mode clusters.
{
"affected": [],
"aliases": [
"CVE-2022-34454"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-02-10T10:15:00Z",
"severity": "MODERATE"
},
"details": "Dell PowerScale OneFS, versions 8.2.x-9.3.x, contain a heap-based buffer overflow. A local privileged malicious user could potentially exploit this vulnerability, leading to system takeover. This impacts compliance mode clusters.",
"id": "GHSA-932m-chc4-849f",
"modified": "2023-02-17T18:30:24Z",
"published": "2023-02-10T12:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-34454"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000205618/dsa-2022-271"
}
],
"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-934M-MX6G-9C62
Vulnerability from github – Published: 2022-08-04 00:00 – Updated: 2022-08-09 00:00This vulnerability allows remote attackers to execute arbitrary code on affected installations of Sante DICOM Viewer Pro 11.9.2. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of J2K files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-16679.
{
"affected": [],
"aliases": [
"CVE-2022-28668"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-03T16:15:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Sante DICOM Viewer Pro 11.9.2. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of J2K files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-16679.",
"id": "GHSA-934m-mx6g-9c62",
"modified": "2022-08-09T00:00:21Z",
"published": "2022-08-04T00:00:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-28668"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-22-622"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9358-2J57-J7HG
Vulnerability from github – Published: 2022-02-11 00:00 – Updated: 2025-10-22 00:32Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate privileges Execute arbitrary commands Bypass authentication and authorization protections Fetch and run unsigned software Cause denial of service (DoS) For more information about these vulnerabilities, see the Details section of this advisory.
{
"affected": [],
"aliases": [
"CVE-2022-20701"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-02-10T18:15:00Z",
"severity": "CRITICAL"
},
"details": "Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate privileges Execute arbitrary commands Bypass authentication and authorization protections Fetch and run unsigned software Cause denial of service (DoS) For more information about these vulnerabilities, see the Details section of this advisory.",
"id": "GHSA-9358-2j57-j7hg",
"modified": "2025-10-22T00:32:29Z",
"published": "2022-02-11T00:00:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-20701"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6D"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-20701"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-22-412"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9368-FGH5-GH2F
Vulnerability from github – Published: 2023-10-10 15:30 – Updated: 2025-11-04 21:30A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function. This flaw allows a local user to trigger an out-of-bounds read error and read the contents of memory on the system.
{
"affected": [],
"aliases": [
"CVE-2023-43785"
],
"database_specific": {
"cwe_ids": [
"CWE-125",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-10T13:15:21Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function. This flaw allows a local user to trigger an out-of-bounds read error and read the contents of memory on the system.",
"id": "GHSA-9368-fgh5-gh2f",
"modified": "2025-11-04T21:30:43Z",
"published": "2023-10-10T15:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43785"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:2145"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:2973"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2023-43785"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2242252"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00004.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20231103-0006"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-9369-5FXH-CRGJ
Vulnerability from github – Published: 2025-08-13 03:30 – Updated: 2025-08-13 21:30Out of bounds write in ANGLE in Google Chrome prior to 139.0.7258.127 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2025-8901"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-13T03:15:40Z",
"severity": "HIGH"
},
"details": "Out of bounds write in ANGLE in Google Chrome prior to 139.0.7258.127 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-9369-5fxh-crgj",
"modified": "2025-08-13T21:30:27Z",
"published": "2025-08-13T03:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-8901"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2025/08/stable-channel-update-for-desktop_12.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/435139154"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-936C-H6Q8-79C4
Vulnerability from github – Published: 2022-05-24 17:02 – Updated: 2024-04-04 02:42In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type "identityref". An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.
{
"affected": [],
"aliases": [
"CVE-2019-19334"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-12-06T16:15:00Z",
"severity": "CRITICAL"
},
"details": "In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type \"identityref\". An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.",
"id": "GHSA-936c-h6q8-79c4",
"modified": "2024-04-04T02:42:13Z",
"published": "2022-05-24T17:02:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-19334"
},
{
"type": "WEB",
"url": "https://github.com/CESNET/libyang/commit/6980afae2ff9fcd6d67508b0a3f694d75fd059d6"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2019:4360"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19334"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PETB6TVMFV5KUD4IKVP2JPLBCYHUGSAJ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RL54JMS7XW7PI6JC4BFSNNLSX5AINQUL"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PETB6TVMFV5KUD4IKVP2JPLBCYHUGSAJ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RL54JMS7XW7PI6JC4BFSNNLSX5AINQUL"
}
],
"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-936W-XRPH-634C
Vulnerability from github – Published: 2026-08-11 18:31 – Updated: 2026-08-11 18:31Lightroom Classic is affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
{
"affected": [],
"aliases": [
"CVE-2026-48405"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-11T18:17:29Z",
"severity": "HIGH"
},
"details": "Lightroom Classic is affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-936w-xrph-634c",
"modified": "2026-08-11T18:31:55Z",
"published": "2026-08-11T18:31:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48405"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/lightroom/apsb26-94.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-936X-JWPC-5P28
Vulnerability from github – Published: 2021-12-23 00:00 – Updated: 2022-04-20 00:01An out-of-bounds write vulnerability exists in the RS-274X aperture macro variables handling functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and the forked version of Gerbv (commit 71493260). A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2021-40394"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-12-22T19:15:00Z",
"severity": "HIGH"
},
"details": "An out-of-bounds write vulnerability exists in the RS-274X aperture macro variables handling functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and the forked version of Gerbv (commit 71493260). A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.",
"id": "GHSA-936x-jwpc-5p28",
"modified": "2022-04-20T00:01:54Z",
"published": "2021-12-23T00:00:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-40394"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00040.html"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1404"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5306"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-3
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
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
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
- 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
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
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
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.