Home/CVE/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 imp
CVE

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 imp

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.

HIGH · CVSS 7.8 EPSS 0.00323
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules3 YARA rules0
⬡

Weakness Classification

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
▤

Affected Products & Versions

2
gnupgall versions
gpg4winall versions
⚠

Public Exploits & PoCs

1
pocbugzilla.opensuse.org · show_bug.cgi?id=1176034bugzilla.opensuse.org
◈

Sigma Hunt Rules

3
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighFile Encryption/Decryption Via Gpg4win From Suspicious Locations
productmediumFile Decryption Using Gpg4win
productmediumFile Encryption Using Gpg4win
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Sep 2020 · 06:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

1
suse-csafopenSUSE-SU-2024:10815-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2020/09/03/4Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2020/09/03/5Mailing ListThird Party Advisory
https://dev.gnupg.org/T5050Mailing List
https://dev.gnupg.org/rG8ec9573e57866dda5efb4677d4454161517484bcPatchVendor Advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2020q3/000448.htmlVendor Advisory
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