CVE-2020-25125 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://www.openwall.com/lists/oss-security/2020/09/03/4 http://www.openwall.com/lists/oss-security/2020/09/03/5 https://bugzilla.opensuse.org/show_bug.cgi?id=1176034 https://dev.gnupg.org/rG8ec9573e57866dda5efb4677d4454161517484bc https://dev.gnupg.org/T5050 https://lists.gnupg.org/pipermail/gnupg-announce/2020q3/000448.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8