CVE-2021-27645
2.5
LOW
CVSS 3.1
EPSS 0.04%
Description
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.
How to fix CVE-2021-27645
To remediate CVE-2021-27645, upgrade the affected package to a fixed version below.
- Debian/glibc—upgrade to 2.31-10 or later
Is CVE-2021-27645 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.31-10
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW2.5 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L |