Vulnerability Report

CVE-2016-4997

Title: Novell Suse Linux Enterprise Software Development Kit Auth Bypass

Auth Bypass

Proof Of Concept

PoC Available for CVE-2016-4997

CWE Category CWE-264

Published Date Jul 03, 2016

Modified Date May 06, 2026

Exploit Status Available

Score 7.8 CVSS v3.1

Exploit Probability (EPSS)

5.49%

Vulnerability Summary

CVE-2016-4997: The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.

Impacted Vendors

suse 1

novell 1

Reference Links

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce683e5f9d045e5d67d1312a42b359cb2ab2a13c http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00060.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00061.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00027.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00048.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00050.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00051.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00052.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00053.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00054.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html http://rhn.redhat.com/errata/RHSA-2016-1847.html http://rhn.redhat.com/errata/RHSA-2016-1875.html http://rhn.redhat.com/errata/RHSA-2016-1883.html http://www.debian.org/security/2016/dsa-3607 http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3 http://www.openwall.com/lists/oss-security/2016/06/24/5 http://www.openwall.com/lists/oss-security/2016/09/29/10 http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html http://www.securityfocus.com/bid/91451 http://www.securitytracker.com/id/1036171 http://www.ubuntu.com/usn/USN-3016-1 http://www.ubuntu.com/usn/USN-3016-2 http://www.ubuntu.com/usn/USN-3016-3 http://www.ubuntu.com/usn/USN-3016-4 http://www.ubuntu.com/usn/USN-3017-1 http://www.ubuntu.com/usn/USN-3017-2 http://www.ubuntu.com/usn/USN-3017-3 http://www.ubuntu.com/usn/USN-3018-1 http://www.ubuntu.com/usn/USN-3018-2 http://www.ubuntu.com/usn/USN-3019-1 http://www.ubuntu.com/usn/USN-3020-1 https://bugzilla.redhat.com/show_bug.cgi?id=1349722 https://github.com/nccgroup/TriforceLinuxSyscallFuzzer/tree/master/crash_reports/report_compatIpt https://github.com/torvalds/linux/commit/ce683e5f9d045e5d67d1312a42b359cb2ab2a13c https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05347541 https://www.exploit-db.com/exploits/40435/ https://www.exploit-db.com/exploits/40489/ http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce683e5f9d045e5d67d1312a42b359cb2ab2a13c http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00060.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00061.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00027.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00048.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00050.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00051.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00052.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00053.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00054.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html http://rhn.redhat.com/errata/RHSA-2016-1847.html http://rhn.redhat.com/errata/RHSA-2016-1875.html http://rhn.redhat.com/errata/RHSA-2016-1883.html http://www.debian.org/security/2016/dsa-3607 http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3 http://www.openwall.com/lists/oss-security/2016/06/24/5 http://www.openwall.com/lists/oss-security/2016/09/29/10 http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html http://www.securityfocus.com/bid/91451 http://www.securitytracker.com/id/1036171 http://www.ubuntu.com/usn/USN-3016-1 http://www.ubuntu.com/usn/USN-3016-2 http://www.ubuntu.com/usn/USN-3016-3 http://www.ubuntu.com/usn/USN-3016-4 http://www.ubuntu.com/usn/USN-3017-1 http://www.ubuntu.com/usn/USN-3017-2 http://www.ubuntu.com/usn/USN-3017-3 http://www.ubuntu.com/usn/USN-3018-1 http://www.ubuntu.com/usn/USN-3018-2 http://www.ubuntu.com/usn/USN-3019-1 http://www.ubuntu.com/usn/USN-3020-1 https://bugzilla.redhat.com/show_bug.cgi?id=1349722 https://github.com/nccgroup/TriforceLinuxSyscallFuzzer/tree/master/crash_reports/report_compatIpt https://github.com/torvalds/linux/commit/ce683e5f9d045e5d67d1312a42b359cb2ab2a13c https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05347541 https://www.exploit-db.com/exploits/40435/ https://www.exploit-db.com/exploits/40489/

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.8

Attack Vector

LOCAL

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

CVSS v2.0

Source Entity [email protected]

Severity HIGH

7.2

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:L/AC:L/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2016-4997 Exploits & PoCs (Proof Of Concept)

Exploit-DB https://www.exploit-db.com/exploits/40489

View Code

Exploit-DB https://www.exploit-db.com/exploits/40435

View Code

May 06, 2026 MODIFIED

Vulnerability data updated via NVD.

April 12, 2025 MODIFIED

Vulnerability data or affected products updated.

July 03, 2016 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.