Out-of-Bounds Affecting libgcc package, versions <0:7.3.1-17.amzn2
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Test your applications- Snyk ID SNYK-AMZN2-LIBGCC-5893981
- published 13 Sep 2023
- disclosed 13 Sep 2023
How to fix?
Upgrade Amazon-Linux:2
libgcc
to version 0:7.3.1-17.amzn2 or higher.
This issue was patched in ALAS2-2023-2245
.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libgcc
package and not the libgcc
package as distributed by Amazon-Linux
.
See How to fix?
for Amazon-Linux:2
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.