Double-Free Vulnerability in GNU C Library's Nameserver Caching Daemon
CVE-2021-27645

2.5LOW

Key Information:

Vendor

Gnu
Status
Glibc
Vendor
CVE Published:
24 February 2021

What is CVE-2021-27645?

A double-free vulnerability exists within the nameserver caching daemon (nscd) of the GNU C Library versions 2.29 to 2.33. When processing requests for netgroup lookups, the nscd may encounter a double-free condition, which can lead to application crashes and potential Denial of Service on affected systems, resulting in degraded service. This poses a risk to stability and reliability in environments depending on glibc for network service functionality.

References

https://sourceware.org/bugzilla/show_bug.cgi?id=27462
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory

CVSS V3.1

Score:
2.5
Severity:
LOW
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.