MGASA-2023-0286 - Updated glibc packages fix a security vulnerability

Publication date: 11 Oct 2023
URL: https://advisories.mageia.org/MGASA-2023-0286.html
Type: security
Affected Mageia releases: 8, 9
CVE: CVE-2023-4911

The updated packages fix a security vulnerability:

A buffer overflow was discovered in the GNU C Library's dynamic loader
ld.so while processing the GLIBC_TUNABLES environment variable. This
issue could allow a local attacker to use maliciously crafted
GLIBC_TUNABLES environment variables when launching binaries with SUID
permission to execute code with elevated privileges. (CVE-2023-4911)

References:
- https://bugs.mageia.org/show_bug.cgi?id=32357
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4911
- https://www.openwall.com/lists/oss-security/2023/10/03/2
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4911

SRPMS:
- 9/core/glibc-2.36-51.mga9
- 8/core/glibc-2.32-32.mga8

Mageia 2023-0286: glibc security update

The updated packages fix a security vulnerability: A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment var...

Summary

The updated packages fix a security vulnerability:
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges. (CVE-2023-4911)

References

- https://bugs.mageia.org/show_bug.cgi?id=32357

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4911

- https://www.openwall.com/lists/oss-security/2023/10/03/2

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4911

Resolution

MGASA-2023-0286 - Updated glibc packages fix a security vulnerability

SRPMS

- 9/core/glibc-2.36-51.mga9

- 8/core/glibc-2.32-32.mga8

Severity
Publication date: 11 Oct 2023
URL: https://advisories.mageia.org/MGASA-2023-0286.html
Type: security
CVE: CVE-2023-4911

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