CVE-2023-4039 Affecting gcc package, versions <13.2.0-r3


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.12% (33rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-WOLFILATEST-GCC-5906128
  • published19 Sept 2023
  • disclosed13 Sept 2023

Introduced: 13 Sep 2023

CVE-2023-4039  (opens in a new tab)

How to fix?

Upgrade Wolfi gcc to version 13.2.0-r3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gcc package and not the gcc package as distributed by Wolfi. See How to fix? for Wolfi 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 Base Scores

version 3.1