CVE-2016-0728 Information

Description

The join_session_keyring function in security/keys/process_keys.c in the Linux kernel before 4.4.1 mishandles object references in a certain error case which allows local users to gain privileges or cause a denial of service (integer overflow and use-after-free) via crafted keyctl commands.

CVSS Vector

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

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=23567fd052a9abb6d67fe8e7a9ccdd9800a540f2 http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176194.html http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00026.html http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00012.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00033.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00034.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00035.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00038.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00041.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00044.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00045.html http://perception-point.io/2016/01/14/analysis-and-exploitation-of-a-linux-kernel-vulnerability-cve-2016-0728/ http://rhn.redhat.com/errata/RHSA-2016-0064.html http://rhn.redhat.com/errata/RHSA-2016-0065.html http://rhn.redhat.com/errata/RHSA-2016-0068.html http://source.android.com/security/bulletin/2016-03-01.html http://www.debian.org/security/2016/dsa-3448 http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1 http://www.openwall.com/lists/oss-security/2016/01/19/2 http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html http://www.securityfocus.com/bid/81054 http://www.securitytracker.com/id/1034701 http://www.ubuntu.com/usn/USN-2870-1 http://www.ubuntu.com/usn/USN-2870-2 http://www.ubuntu.com/usn/USN-2871-1 http://www.ubuntu.com/usn/USN-2871-2 http://www.ubuntu.com/usn/USN-2872-1 http://www.ubuntu.com/usn/USN-2872-2 http://www.ubuntu.com/usn/USN-2872-3 http://www.ubuntu.com/usn/USN-2873-1 https://bto.bluecoat.com/security-advisory/sa112 https://bugzilla.redhat.com/show_bug.cgi?id=1297475 https://github.com/torvalds/linux/commit/23567fd052a9abb6d67fe8e7a9ccdd9800a540f2 https://h20565.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05018265 https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05130958 https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380 https://security.netapp.com/advisory/ntap-20160211-0001/ https://www.exploit-db.com/exploits/39277/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8