Vulnerability Details CVE-2021-27645
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 4.8%
CVSS Severity
CVSS v3 Score 2.5
CVSS v2 Score 1.9
References
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7LZNT6KTMCCWPWXEOGSHD3YLYZKUGMH5/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7TS26LIZSOBLGJEZMJX4PXT5BQDE2WS/
- https://security.gentoo.org/glsa/202107-07
- https://sourceware.org/bugzilla/show_bug.cgi?id=27462
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7LZNT6KTMCCWPWXEOGSHD3YLYZKUGMH5/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7TS26LIZSOBLGJEZMJX4PXT5BQDE2WS/
- https://security.gentoo.org/glsa/202107-07
- https://sourceware.org/bugzilla/show_bug.cgi?id=27462
Products affected by CVE-2021-27645
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cpe:2.3:a:gnu:glibc:2.29
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cpe:2.3:a:gnu:glibc:2.29.9000
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cpe:2.3:a:gnu:glibc:2.30
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cpe:2.3:a:gnu:glibc:2.30.9000
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cpe:2.3:a:gnu:glibc:2.31
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cpe:2.3:a:gnu:glibc:2.31.9000
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cpe:2.3:a:gnu:glibc:2.32
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cpe:2.3:a:gnu:glibc:2.32.0
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cpe:2.3:a:gnu:glibc:2.32.9000
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cpe:2.3:a:gnu:glibc:2.33
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:fedoraproject:fedora:33
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cpe:2.3:o:fedoraproject:fedora:34