161 lines
6.8 KiB
JSON
161 lines
6.8 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-63383",
|
|
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "GitHub_M",
|
|
"dateReserved": "2026-07-16T17:39:30.171Z",
|
|
"datePublished": "2026-08-20T17:48:24.568Z",
|
|
"dateUpdated": "2026-08-20T18:41:23.897Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"title": "Libevent: decode_tag_internal() can lead to out-of-bounds read",
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-125",
|
|
"lang": "en",
|
|
"description": "CWE-125: Out-of-bounds Read",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV4_0": {
|
|
"attackVector": "NETWORK",
|
|
"attackComplexity": "LOW",
|
|
"attackRequirements": "NONE",
|
|
"privilegesRequired": "NONE",
|
|
"userInteraction": "NONE",
|
|
"vulnConfidentialityImpact": "NONE",
|
|
"vulnIntegrityImpact": "NONE",
|
|
"vulnAvailabilityImpact": "HIGH",
|
|
"subConfidentialityImpact": "NONE",
|
|
"subIntegrityImpact": "NONE",
|
|
"subAvailabilityImpact": "NONE",
|
|
"baseScore": 8.7,
|
|
"baseSeverity": "HIGH",
|
|
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
|
|
"version": "4.0"
|
|
}
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"name": "https://github.com/libevent/libevent/security/advisories/GHSA-fj29-64w6-73h6",
|
|
"tags": [
|
|
"x_refsource_CONFIRM"
|
|
],
|
|
"url": "https://github.com/libevent/libevent/security/advisories/GHSA-fj29-64w6-73h6"
|
|
},
|
|
{
|
|
"name": "https://github.com/libevent/libevent/commit/91ed8745eebabdd27592a83d350338a8c4626321",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/libevent/libevent/commit/91ed8745eebabdd27592a83d350338a8c4626321"
|
|
},
|
|
{
|
|
"name": "https://github.com/libevent/libevent/commit/e1f9e21887c6b104e206a718385ba3ffc75180cb",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/libevent/libevent/commit/e1f9e21887c6b104e206a718385ba3ffc75180cb"
|
|
},
|
|
{
|
|
"name": "https://github.com/libevent/libevent/releases/tag/release-2.1.13-stable",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/libevent/libevent/releases/tag/release-2.1.13-stable"
|
|
},
|
|
{
|
|
"name": "https://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha"
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"vendor": "libevent",
|
|
"product": "libevent",
|
|
"versions": [
|
|
{
|
|
"version": ">= 2.2.0-alpha, < 2.2.2-alpha",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "< 2.1.13",
|
|
"status": "affected"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
|
|
"shortName": "GitHub_M",
|
|
"dateUpdated": "2026-08-20T17:48:24.568Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in event_tagging.c when decode_tag_internal requests at most five bytes from evbuffer_pullup but iterates using the full logical buffer length. A fragmented evbuffer containing a six-byte malformed tag can therefore advance past the pullup window and trigger an out-of-bounds read, which can crash a process that decodes attacker-controlled tagged RPC data. This issue is fixed in versions 2.1.13 and 2.2.2-alpha."
|
|
}
|
|
],
|
|
"source": {
|
|
"advisory": "GHSA-fj29-64w6-73h6",
|
|
"discovery": "UNKNOWN"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"references": [
|
|
{
|
|
"url": "https://github.com/libevent/libevent/security/advisories/GHSA-fj29-64w6-73h6",
|
|
"tags": [
|
|
"exploit"
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-08-20T18:37:55.514994Z",
|
|
"id": "CVE-2026-63383",
|
|
"options": [
|
|
{
|
|
"Exploitation": "poc"
|
|
},
|
|
{
|
|
"Automatable": "yes"
|
|
},
|
|
{
|
|
"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": "2026-08-20T18:41:23.897Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |