Vulnerability Monitor

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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.

Published

2021-02-24T15:15:13.837

Last Modified

2025-06-09T15:15:25.890

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 2.5 (LOW)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:N/I:N/A:P

  • Access Vector: LOCAL
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

3.4

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-415
  • Type: Secondary
    CWE-415
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application gnu glibc ≤ 2.33 Yes
Operating System fedoraproject fedora 33 Yes
Operating System fedoraproject fedora 34 Yes
Operating System debian debian_linux 10.0 Yes
References