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.
Vulnerability category: Memory CorruptionDenial of service
Published 2021-02-24 15:15:14
Updated 2022-11-04 20:06:09
Source MITRE
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-27645

Probability of exploitation activity in the next 30 days: 0.05%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 14 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-27645

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
1.9
 LOW AV:L/AC:M/Au:N/C:N/I:N/A:P
3.4
2.9
 nvd@nist.gov
2.5
 LOW CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
1.0
1.4
 nvd@nist.gov

CWE ids for CVE-2021-27645

  • The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-27645

Products affected by CVE-2021-27645

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