CVE-2023-4039 Affecting libstdc++6 package, versions <13.2.1+git7813-150000.1.6.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.06% (31st percentile)

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  • Snyk IDSNYK-SLES155-LIBSTDC6-6068076
  • published17 Nov 2023
  • disclosed16 Nov 2023

Introduced: 16 Nov 2023

CVE-2023-4039  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 libstdc++6 to version 13.2.1+git7813-150000.1.6.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libstdc++6 package and not the libstdc++6 package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

DISPUTEDA failure in the -fstack-protector feature in GCC-based toolchains that target AArch64 allows an attacker to exploit an existing buffer overflow in dynamically-sized local variables in your application without this being detected. This stack-protector failure only applies to C99-style dynamically-sized local variables or those created using alloca(). The stack-protector operates as intended for statically-sized local variables.

The default behavior when the stack-protector detects an overflow is to terminate your application, resulting in controlled loss of availability. An attacker who can exploit a buffer overflow without triggering the stack-protector might be able to change program flow control to cause an uncontrolled loss of availability or to go further and affect confidentiality or integrity. NOTE: The GCC project argues that this is a missed hardening bug and not a vulnerability by itself.

CVSS Scores

version 3.1