Overview
- 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.
- Source
- arm-security@arm.com
- NVD status
- Modified
- CNA Tags
- disputed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 4.8
- Impact score
- 2.5
- Exploitability score
- 2.2
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- Severity
- MEDIUM
Weaknesses
- nvd@nist.gov
- NVD-CWE-Other
- arm-security@arm.com
- CWE-693
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:arm64:*",
"vulnerable": true,
"matchCriteriaId": "C8373A25-594D-4F3F-981B-0D02056992FC",
"versionEndExcluding": "2023-09-12"
}
],
"operator": "OR"
}
]
}
]