140 lines
6.0 KiB
JSON
140 lines
6.0 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-55149",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-06-16T15:13:28.164Z",
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"datePublished": "2026-09-15T16:30:37.580Z",
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"dateUpdated": "2026-09-17T16:08:18.413Z"
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},
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"containers": {
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"cna": {
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"title": "Vouch Proxy: Unbounded Multipart Cookie Allocation DoS",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-789",
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"lang": "en",
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"description": "CWE-789: Memory Allocation with Excessive Size Value",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 7.5,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/vouch/vouch-proxy/security/advisories/GHSA-qqff-5854-px68",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/vouch/vouch-proxy/security/advisories/GHSA-qqff-5854-px68"
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},
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{
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"name": "https://github.com/vouch/vouch-proxy/commit/fa18ce30ba50a4863a436acad044c22965329c4f",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/vouch/vouch-proxy/commit/fa18ce30ba50a4863a436acad044c22965329c4f"
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},
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{
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"name": "https://github.com/vouch/vouch-proxy/releases/tag/v0.48.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/vouch/vouch-proxy/releases/tag/v0.48.0"
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}
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],
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"affected": [
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{
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"vendor": "vouch",
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"product": "vouch-proxy",
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"versions": [
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{
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"version": "< 0.48.0",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-09-15T16:30:37.580Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Vouch Proxy is an SSO and OAuth/OIDC login solution for Nginx using the auth_request module. Prior to 0.48.0, Cookie in pkg/cookie/cookie.go parses the total part count from an attacker-controlled multipart cookie name and passes the value to make([]string, numParts) without checking that the value is positive or reasonably bounded. Requests to /validate and /_external-auth-:id reach JWTCacheHandler in pkg/jwtmanager/jwtcache.go, FindJWT in pkg/jwtmanager/jwtmanager.go, and the vulnerable cookie reassembly before JWT validation, so no account or valid session is required. A cookie name such as VouchCookie_1of10000000000 causes an attempted slice allocation of roughly 160 GB and a fatal Go runtime out-of-memory condition, allowing one request to crash the authentication proxy and repeated requests to sustain unavailability. This vulnerability is fixed in 0.48.0."
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}
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],
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"source": {
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"advisory": "GHSA-qqff-5854-px68",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/vouch/vouch-proxy/security/advisories/GHSA-qqff-5854-px68",
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"tags": [
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"exploit"
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]
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}
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],
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-17T16:05:30.568513Z",
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"id": "CVE-2026-55149",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-09-17T16:08:18.413Z"
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}
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}
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]
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}
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} |