CVE-2016-9555 Information

Description

The sctp_sf_ootb function in net/sctp/sm_statefuns.c in the Linux kernel before 4.8.8 lacks chunk-length checking for the first chunk which allows remote attackers to cause a denial of service (out-of-bounds slab access) or possibly have unspecified other impact via crafted SCTP data.

CVSS Vector

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

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bf911e985d6bbaa328c20c3e05f4eb03de11fdd6 http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00044.html http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00054.html http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00055.html http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00056.html http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00067.html http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00070.html http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00073.html http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00076.html http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00077.html http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00087.html http://rhn.redhat.com/errata/RHSA-2017-0086.html http://rhn.redhat.com/errata/RHSA-2017-0091.html http://rhn.redhat.com/errata/RHSA-2017-0113.html http://rhn.redhat.com/errata/RHSA-2017-0307.html http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.8 http://www.openwall.com/lists/oss-security/2016/11/22/18 http://www.securityfocus.com/bid/94479 http://www.securitytracker.com/id/1037339 https://bto.bluecoat.com/security-advisory/sa134 https://bugzilla.redhat.com/show_bug.cgi?id=1397930 https://github.com/torvalds/linux/commit/bf911e985d6bbaa328c20c3e05f4eb03de11fdd6 https://groups.google.com/forum/!topic/syzkaller/pAUcHsUJbjk

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8