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osvGoogleOSV:ALSA-2023:5453
HistoryOct 05, 2023 - 12:00 a.m.

Important: glibc security update

2023-10-0500:00:00
Google
osv.dev
11
glibc
security update
buffer overflow
privilege escalation
cve-2023-4911
stack read overflow
cve-2023-4527
use-after-free
cve-2023-4806
gaih_inet
cve-2023-4813

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.1 High

AI Score

Confidence

Low

0.014 Low

EPSS

Percentile

86.5%

The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.

Security Fix(es):

  • glibc: buffer overflow in ld.so leading to privilege escalation (CVE-2023-4911)
  • glibc: Stack read overflow in getaddrinfo in no-aaaa mode (CVE-2023-4527)
  • glibc: potential use-after-free in getaddrinfo() (CVE-2023-4806)
  • glibc: potential use-after-free in gaih_inet() (CVE-2023-4813)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.1 High

AI Score

Confidence

Low

0.014 Low

EPSS

Percentile

86.5%