Buffer Underwrite ('Buffer Underflow') in c-ares - CVE-2023-31130
Published: May 23, 2023 / Updated: June 21, 2023
Vulnerability identifier: #VU76425
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-31130
CWE-ID: CWE-124
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: c-ares.haxx.se
Affected software:
c-ares
c-ares
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a buffer underflow when using certain IPv6 addresses, such as 0::00:00:00/2". A local privileged user can trigger a boundary error and crash the service.
How to mitigate CVE-2023-31130
Install updates from vendor's website.