Vulnerability identifier: #VU32850
Vulnerability risk: Medium
CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
GnuPG
Client/Desktop applications /
Encryption software
Vendor: GNU
Description
The vulnerability allows remote attackers to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (crash) and possibly execute arbitrary code via a certificate with a large number of Subject Alternate Names, which is not properly handled in a realloc operation when importing the certificate or verifying its signature.
Mitigation
Update to version 2.0.17.
Vulnerable software versions
GnuPG: 1.2.0 - 2.0.16
External links
http://lists.fedoraproject.org/pipermail/package-announce/2010-August/044935.html
http://lists.gnupg.org/pipermail/gnupg-announce/2010q3/000302.html
http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00001.html
http://secunia.com/advisories/38877
http://secunia.com/advisories/40718
http://secunia.com/advisories/40841
http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.462008
http://wiki.rpath.com/wiki/Advisories:rPSA-2010-0076
http://www.debian.org/security/2010/dsa-2076
http://www.mandriva.com/security/advisories?name=MDVSA-2010:143
http://www.securityfocus.com/bid/41945
http://www.securitytracker.com/id?1024247
http://www.vupen.com/english/advisories/2010/1931
http://www.vupen.com/english/advisories/2010/1950
http://www.vupen.com/english/advisories/2010/1988
http://www.vupen.com/english/advisories/2010/2217
http://www.vupen.com/english/advisories/2010/3125
http://issues.rpath.com/browse/RPL-3229
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.