{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"state":"PUBLISHED","cveId":"CVE-2021-27645","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","dateUpdated":"2025-06-09T14:58:23.319Z","dateReserved":"2021-02-24T00:00:00.000Z","datePublished":"2021-02-24T00:00:00.000Z"},"containers":{"cna":{"providerMetadata":{"orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre","dateUpdated":"2022-10-17T00:00:00.000Z"},"descriptions":[{"lang":"en","value":"The nameserver caching daemon (nscd) in the GNU C Library (aka glibc or libc6) 2.29 through 2.33, when processing a request for netgroup lookup, may crash due to a double-free, potentially resulting in degraded service or Denial of Service on the local system. This is related to netgroupcache.c."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=27462"},{"name":"FEDORA-2021-6749bfcfd9","tags":["vendor-advisory"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7TS26LIZSOBLGJEZMJX4PXT5BQDE2WS/"},{"name":"FEDORA-2021-2ba993d6c5","tags":["vendor-advisory"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7LZNT6KTMCCWPWXEOGSHD3YLYZKUGMH5/"},{"name":"GLSA-202107-07","tags":["vendor-advisory"],"url":"https://security.gentoo.org/glsa/202107-07"},{"name":"[debian-lts-announce] 20221017 [SECURITY] [DLA 3152-1] glibc security update","tags":["mailing-list"],"url":"https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html"}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"n/a"}]}]},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T21:26:10.554Z"},"title":"CVE Program Container","references":[{"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=27462","tags":["x_transferred"]},{"name":"FEDORA-2021-6749bfcfd9","tags":["vendor-advisory","x_transferred"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7TS26LIZSOBLGJEZMJX4PXT5BQDE2WS/"},{"name":"FEDORA-2021-2ba993d6c5","tags":["vendor-advisory","x_transferred"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7LZNT6KTMCCWPWXEOGSHD3YLYZKUGMH5/"},{"name":"GLSA-202107-07","tags":["vendor-advisory","x_transferred"],"url":"https://security.gentoo.org/glsa/202107-07"},{"name":"[debian-lts-announce] 20221017 [SECURITY] [DLA 3152-1] glibc security update","tags":["mailing-list","x_transferred"],"url":"https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html"}]},{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-415","lang":"en","description":"CWE-415 Double Free"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":2.5,"attackVector":"LOCAL","baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"LOW","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-06-09T14:57:29.856656Z","id":"CVE-2021-27645","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":"2025-06-09T14:58:23.319Z"}}]}}