CVE-2015-1607 Information

Description

kbx/keybox-search.c in GnuPG before 1.4.19 2.0.x before 2.0.27 and 2.1.x before 2.1.2 does not properly handle bitwise left-shifts which allows remote attackers to cause a denial of service (invalid read operation) via a crafted keyring file related to sign extensions and \memcpy with overlapping ranges.\

CVSS Vector

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

Reference

http://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=2183683bd633818dd031b090b5530951de76f392 http://www.openwall.com/lists/oss-security/2015/02/13/14 http://www.openwall.com/lists/oss-security/2015/02/14/6 http://www.securityfocus.com/bid/72610 http://www.ubuntu.com/usn/usn-2554-1/ https://blog.fuzzing-project.org/5-Multiple-issues-in-GnuPG-found-through-keyring-fuzzing-TFPA-0012015.html https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000361.html https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000362.html https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000363.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5