CVE-2023-4039 Affecting gcc-12 package, versions *
Snyk CVSS
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Test your applications- Snyk ID SNYK-DEBIAN12-GCC12-5901316
- published 14 Sep 2023
- disclosed 13 Sep 2023
Introduced: 13 Sep 2023
CVE-2023-4039 Open this link in a new tabHow to fix?
There is no fixed version for Debian:12
gcc-12
.
NVD Description
Note: Versions mentioned in the description apply only to the upstream gcc-12
package and not the gcc-12
package as distributed by Debian
.
See How to fix?
for Debian:12
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.