Integer overflow in Gnupg
CVE-2022-3515
A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The vulnerability can be exploited remotely for code execution on the target system by passing specially crafted data to the application, for example, a malicious S/MIME attachment.
Vulnerability class: Integer 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: 0.016 (75.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Gnupg
- Gnupg Libksba
- Gnupg Vs-Desktop
- Gpg4win
- Libksba — versions Fixed in libksba v1.6.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- www.gnupg.org/blog/20221017-pepe-left-the-ksba.html (Third Party Advisory)
- dev.gnupg.org/rK4b7d9cd4a018898d7714ce06f3faf2626c14582b (Exploit, Patch, Third Party Advisory)
- access.redhat.com/security/cve/CVE-2022-3515 (Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20230706-0008/
Frequently asked questions
- What is CVE-2022-3515?
- CVE-2022-3515 is a critical-severity vulnerability in Gnupg, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2023-01-12.
- How severe is CVE-2022-3515?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-3515 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.