CVE-2016-2053 Information

Description

The asn1_ber_decoder function in lib/asn1_decoder.c in the Linux kernel before 4.3 allows attackers to cause a denial of service (panic) via an ASN.1 BER file that lacks a public key leading to mishandling by the public_key_verify_signature function in crypto/asymmetric_keys/public_key.c.

CVSS Vector

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0d62e9dd6da45bbf0f33a8617afc5fe774c8f45f http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00008.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00014.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00015.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00016.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00017.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00018.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00019.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00020.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00021.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00022.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00023.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00026.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html http://rhn.redhat.com/errata/RHSA-2016-2574.html http://rhn.redhat.com/errata/RHSA-2016-2584.html http://www.openwall.com/lists/oss-security/2016/01/25/4 http://www.securitytracker.com/id/1036763 https://bugzilla.redhat.com/show_bug.cgi?id=1300237 https://github.com/torvalds/linux/commit/0d62e9dd6da45bbf0f33a8617afc5fe774c8f45f

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

4.7