Linux Kernel up to 3.8.8 kernel/events/core.c perf_swevent_init perf_event_open numeric error

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6.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 3.8.8. Affected is the function perf_swevent_init of the file kernel/events/core.c. Such manipulation of the argument perf_event_open leads to numeric error. This vulnerability is traded as CVE-2013-2094. Furthermore, there is an exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 3.8.8 (Operating System) and classified as critical. Affected by this issue is the function perf_swevent_init of the file kernel/events/core.c. The manipulation of the argument perf_event_open with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is confidentiality, and integrity. CVE summarizes:

The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows local users to gain privileges via a crafted perf_event_open system call.

The weakness was shared 04/12/2013 by Trinity as confirmed changelog entry (Website). The advisory is shared for download at kernel.org. This vulnerability is handled as CVE-2013-2094 since 02/19/2013. The attack needs to be approached locally. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed by sd and been published 2 months after the advisory. The exploit is available at exploit-db.com. It is declared as attacked. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 68854 (Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2013-2524)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166012 (SUSE Security Update for Kernel (openSUSE-SU-2013:0951-1)). This issue was added on 09/15/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 10/06/2022:

Apply updates per vendor instructions.

Upgrading to version 3.8.9 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 3 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (84196), Exploit-DB (25444), Tenable (68854), OSVDB (93361†) and Secunia (SA53176†). The entries VDB-7738, VDB-8176, VDB-8568 and VDB-8597 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.1
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.4
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Attacked
Author: sd
Download: 🔍

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Nessus ID: 68854
Nessus Name: Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2013-2524)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892669
OpenVAS Name: Debian Security Advisory DSA 2669-1 (linux - privilege escalation/denial of service/information leak
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
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Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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0-Day Time: 🔍
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Exploit Delay Time: 🔍

Upgrade: Kernel 3.8.9
Patch: git.kernel.org

Timelineinfo

02/19/2013 🔍
04/12/2013 +52 days 🔍
04/15/2013 +3 days 🔍
05/14/2013 +29 days 🔍
05/14/2013 +0 days 🔍
05/14/2013 +0 days 🔍
05/14/2013 +0 days 🔍
05/15/2013 +1 days 🔍
05/16/2013 +1 days 🔍
05/28/2013 +12 days 🔍
07/12/2013 +45 days 🔍
02/04/2025 +4225 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: kernel.org
Researcher: Trinity
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-2094 (🔍)
GCVE (CVE): GCVE-0-2013-2094
GCVE (VulDB): GCVE-100-8744

OVAL: 🔍

X-Force: 84196
Secunia: 53176 - Ubuntu update for kernel, Less Critical
OSVDB: 93361
Vulnerability Center: 39639 - Linux Kernel Before 3.8.9 Local Privilege Escalation Vulnerability by Crafted perf_event_open System Call, High

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

Entryinfo

Created: 05/15/2013 16:42
Updated: 02/04/2025 23:38
Changes: 05/15/2013 16:42 (90), 04/30/2017 10:35 (4), 05/11/2021 14:31 (3), 04/27/2024 17:16 (29), 09/09/2024 22:30 (1), 12/19/2024 19:44 (1), 02/04/2025 23:38 (11)
Complete: 🔍
Committer:
Cache ID: 216:B90:103

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