Linux Kernel up to 4.6.4 AppArmor security/apparmor/lsm.c apparmor_setprocattr memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 4.6.4. It has been classified as problematic. This issue affects the function apparmor_setprocattr of the file security/apparmor/lsm.c of the component AppArmor. This manipulation causes memory corruption. This vulnerability is registered as CVE-2016-6187. The attack needs to be launched locally. Furthermore, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.6.4 (Operating System). It has been declared as critical. Affected by this vulnerability is the function apparmor_setprocattr of the file security/apparmor/lsm.c of the component AppArmor. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The apparmor_setprocattr function in security/apparmor/lsm.c in the Linux kernel before 4.6.5 does not validate the buffer size, which allows local users to gain privileges by triggering an AppArmor setprocattr hook.

The weakness was published 08/06/2016 (Website). It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2016-6187 since 07/09/2016. Attacking locally is a requirement. The requirement for exploitation is a single authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k.

Upgrading to version 4.6.5 eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (44301) and SecurityFocus (BID 91696†). Similar entries are available at VDB-90658, VDB-90657, VDB-90656 and VDB-90654. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.8
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.6.5
Patch: git.kernel.org

Timelineinfo

07/08/2016 🔍
07/09/2016 +1 days 🔍
08/06/2016 +28 days 🔍
08/06/2016 +0 days 🔍
08/08/2016 +2 days 🔍
10/20/2024 +2995 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 30a46a4647fd1df9cf52e43bf467f0d9265096ca
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-6187 (🔍)
GCVE (CVE): GCVE-0-2016-6187
GCVE (VulDB): GCVE-100-90655
SecurityFocus: 91696 - Linux Kernel CVE-2016-6187 Local Privilege Escalation Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 08/08/2016 15:26
Updated: 10/20/2024 19:38
Changes: 08/08/2016 15:26 (55), 03/22/2019 10:13 (16), 09/13/2022 09:58 (5), 10/20/2024 19:38 (14)
Complete: 🔍
Cache ID: 216:C27:103

Be aware that VulDB is the high quality source for vulnerability data.

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