Buffer overflow in Gnupg
CVE-2020-25125
GnuPG 2.2.21 and 2.2.22 (and Gpg4win 3.1.12) has an array overflow, leading to a crash or possibly unspecified other impact, when a victim imports an attacker's OpenPGP key, and this key has AEAD preferences. The overflow is caused by a g10/key-check.c error. NOTE: GnuPG 2.3.x is unaffected. GnuPG 2.2.23 is a fixed version.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (68.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.opensuse.org/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- dev.gnupg.org/rG8ec9573e57866dda5efb4677d4454161517484bc (Patch, Vendor Advisory)
- lists.gnupg.org/pipermail/gnupg-announce/2020q3/000448.html (Vendor Advisory)
- dev.gnupg.org/T5050 (Mailing List)
- www.openwall.com/lists/oss-security/2020/09/03/4 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/09/03/5 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-25125?
- CVE-2020-25125 is a high-severity vulnerability in Gnupg, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2020-09-03.
- How severe is CVE-2020-25125?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-25125 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.