Linux Kernel RLIMIT_STACK 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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8.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel. This vulnerability affects unknown code of the component RLIMIT_STACK. The manipulation leads to 7pk security. This vulnerability is uniquely identified as CVE-2016-3672. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (affected version unknown) and classified as critical. This issue affects an unknown functionality of the component RLIMIT_STACK. The manipulation with an unknown input leads to a 7pk security vulnerability. Using CWE to declare the problem leads to CWE-254. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 04/06/2016 by Hector Marco as Bug 1324749 as confirmed bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2016-3672 since 03/25/2016. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1211 according to MITRE ATT&CK.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 91425 (Ubuntu 14.04 LTS : linux vulnerabilities (USN-2989-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196463 (Ubuntu Security Notification for Linux Vulnerabilities (USN-2965-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (112055), Exploit-DB (39669), Tenable (91425) and SecurityFocus (BID 85884†). The entries VDB-81364, VDB-81365, VDB-81366 and VDB-81378 are pretty similar. 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: 8.8
VulDB Meta Temp Score: 8.3

VulDB Base Score: 9.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91425
Nessus Name: Ubuntu 14.04 LTS : linux vulnerabilities (USN-2989-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 830125
OpenVAS Name: Ubuntu Update for linux-raspi2 USN-2965-3
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: git.kernel.org

Timelineinfo

03/25/2016 🔍
04/06/2016 +11 days 🔍
04/06/2016 +0 days 🔍
04/11/2016 +5 days 🔍
04/27/2016 +16 days 🔍
06/01/2016 +34 days 🔍
06/01/2016 +0 days 🔍
12/08/2024 +3112 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 1324749
Researcher: Hector Marco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-3672 (🔍)
GCVE (CVE): GCVE-0-2016-3672
GCVE (VulDB): GCVE-100-81887

OVAL: 🔍

X-Force: 112055 - Linux Kernel RLIMIT_STACK security bypass
SecurityFocus: 85884 - Linux Kernel CVE-2016-3672 ASLR Implementation Local Security Weakness
SecurityTracker: 1035506

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

Entryinfo

Created: 04/11/2016 10:10
Updated: 12/08/2024 17:01
Changes: 04/11/2016 10:10 (66), 09/30/2018 09:17 (22), 07/13/2022 09:01 (5), 12/08/2024 17:01 (14)
Complete: 🔍
Cache ID: 216:428:103

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