Buffer overflow in Zbar Project
CVE-2023-40889
A heap-based buffer overflow exists in the qr_reader_match_centers function of ZBar 0.23.90. Specially crafted QR codes may lead to information disclosure and/or arbitrary code execution. To trigger this vulnerability, an attacker can digitally input the malicious QR code, or prepare it to be physically scanned by the vulnerable scanner.
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: 0.017 (77.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Zbar Project — versions 0.23.90
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackmd.io/@cspl/B1ZkFZv23
- lists.debian.org/debian-lts-announce/2023/12/msg00001.html (mailing-list)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-40889?
- CVE-2023-40889 is a critical-severity vulnerability in Zbar Project, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-08-29.
- How severe is CVE-2023-40889?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2023-40889 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.