Buffer overflow in GNU Glibc
CVE-2022-23218
The deprecated compatibility function svcunix_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its path argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denial of service or (if an application is not built with a stack protector enabled) arbitrary code execution.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.053 (92.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.047 · newest: 0.053 · change: +0.005
Affected products
- GNU Glibc
- Oracle Communications Cloud Native Core Unified Data Repository — versions 22.2.0
- Oracle Enterprise Operations Monitor — versions 4.3, 4.4, 5.0
- Debian Linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sourceware.org/bugzilla/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- www.oracle.com/security-alerts/cpujul2022.html (Patch, Third Party Advisory)
- security.gentoo.org/glsa/202208-24 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/10/msg00021.html (mailing-list, Mailing List, Third Party Advisory)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2022-23218?
- CVE-2022-23218 is a critical-severity vulnerability in GNU Glibc, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2022-01-14.
- How severe is CVE-2022-23218?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-23218 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.