219 lines
8.8 KiB
JSON
219 lines
8.8 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-77219",
|
|
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "VulnCheck",
|
|
"dateReserved": "2026-08-20T18:25:46.943Z",
|
|
"datePublished": "2026-08-21T20:20:45.314Z",
|
|
"dateUpdated": "2026-11-08T14:08:55.414Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
|
|
"shortName": "VulnCheck",
|
|
"dateUpdated": "2026-11-08T14:08:55.414Z"
|
|
},
|
|
"datePublic": "2026-07-01T00:00:00.000Z",
|
|
"title": "GNU Emacs < 31.0.91 Heap Over-Read via PBM/PPM/PGM Image Loader",
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "GNU Emacs before 31.0.91 contains an integer overflow in the PBM/PPM/PGM image loader that allows an attacker to leak heap memory contents by supplying a crafted image with large dimensions and an elevated max color index. The image loader multiplies image dimensions and channel count using signed integer arithmetic; for sufficiently large values, the result wraps to a negative number, bypassing the bounds check and causing the pixel reader to access heap memory past the end of the allocated buffer. The over-read contents are interpreted as pixel color values and rendered on screen."
|
|
}
|
|
],
|
|
"tags": [
|
|
"x_open-source"
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"cweId": "CWE-190",
|
|
"description": "Integer Overflow or Wraparound",
|
|
"type": "CWE"
|
|
},
|
|
{
|
|
"lang": "en",
|
|
"cweId": "CWE-125",
|
|
"description": "Out-of-bounds Read",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"defaultStatus": "affected",
|
|
"vendor": "GNU",
|
|
"product": "Emacs",
|
|
"packageURL": "pkg:github/emacs-mirror/emacs",
|
|
"repo": "https://github.com/emacs-mirror/emacs",
|
|
"versions": [
|
|
{
|
|
"status": "affected",
|
|
"version": "0",
|
|
"versionType": "semver",
|
|
"lessThan": "31.0.91"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:a:gnu:emacs:*:*:*:*:*:*:*:*",
|
|
"versionEndExcluding": "31.0.91"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"format": "CVSS",
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "GENERAL"
|
|
}
|
|
],
|
|
"cvssV4_0": {
|
|
"attackVector": "LOCAL",
|
|
"attackComplexity": "LOW",
|
|
"attackRequirements": "NONE",
|
|
"privilegesRequired": "NONE",
|
|
"userInteraction": "PASSIVE",
|
|
"vulnConfidentialityImpact": "HIGH",
|
|
"subConfidentialityImpact": "NONE",
|
|
"vulnIntegrityImpact": "NONE",
|
|
"subIntegrityImpact": "NONE",
|
|
"vulnAvailabilityImpact": "HIGH",
|
|
"subAvailabilityImpact": "NONE",
|
|
"exploitMaturity": "NOT_DEFINED",
|
|
"Safety": "NOT_DEFINED",
|
|
"Automatable": "NOT_DEFINED",
|
|
"Recovery": "NOT_DEFINED",
|
|
"valueDensity": "NOT_DEFINED",
|
|
"vulnerabilityResponseEffort": "NOT_DEFINED",
|
|
"providerUrgency": "NOT_DEFINED",
|
|
"version": "4.0",
|
|
"baseSeverity": "MEDIUM",
|
|
"baseScore": 6.9,
|
|
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N"
|
|
}
|
|
},
|
|
{
|
|
"format": "CVSS",
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "GENERAL"
|
|
}
|
|
],
|
|
"cvssV3_1": {
|
|
"attackVector": "LOCAL",
|
|
"attackComplexity": "LOW",
|
|
"privilegesRequired": "NONE",
|
|
"userInteraction": "REQUIRED",
|
|
"scope": "UNCHANGED",
|
|
"confidentialityImpact": "HIGH",
|
|
"integrityImpact": "NONE",
|
|
"availabilityImpact": "HIGH",
|
|
"version": "3.1",
|
|
"baseSeverity": "HIGH",
|
|
"baseScore": 7.1,
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"
|
|
}
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://debbugs.gnu.org/cgi/bugreport.cgi?bug=81344",
|
|
"name": "Bug Report",
|
|
"tags": [
|
|
"issue-tracking"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://github.com/emacs-mirror/emacs/releases/tag/emacs-31.0.91",
|
|
"name": "Emacs emacs-31.0.91 Release Notes",
|
|
"tags": [
|
|
"release-notes"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://github.com/emacs-mirror/emacs/commit/b07e634e4cf45162ae0178e32092b040587f2c6c",
|
|
"name": "Patch Commit",
|
|
"tags": [
|
|
"patch"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://www.vulncheck.com/advisories/gnu-emacs-heap-over-read-via-pbm-ppm-pgm-image-loader",
|
|
"tags": [
|
|
"third-party-advisory"
|
|
]
|
|
}
|
|
],
|
|
"credits": [
|
|
{
|
|
"lang": "en",
|
|
"value": "Tristan Madani",
|
|
"type": "finder"
|
|
}
|
|
],
|
|
"source": {
|
|
"discovery": "UNKNOWN"
|
|
},
|
|
"x_generator": {
|
|
"engine": "vulncheck"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-08-21T21:32:45.496424Z",
|
|
"id": "CVE-2026-77219",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-08-21T21:42:58.824Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |