vulnerability

Huawei EulerOS: CVE-2023-4039: gcc security update

Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
Sep 13, 2023
Added
Jan 10, 2024
Modified
Feb 20, 2025

Description

**DISPUTED**A 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.

Solution(s)

huawei-euleros-2_0_sp10-upgrade-libasanhuawei-euleros-2_0_sp10-upgrade-libatomichuawei-euleros-2_0_sp10-upgrade-libgcchuawei-euleros-2_0_sp10-upgrade-libgfortranhuawei-euleros-2_0_sp10-upgrade-libgomphuawei-euleros-2_0_sp10-upgrade-libobjchuawei-euleros-2_0_sp10-upgrade-libquadmathhuawei-euleros-2_0_sp10-upgrade-libstdc++
Title
NEW

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