Linux Kernel up to 3.8.8 kernel/events/core.c perf_swevent_init perf_event_open numeric error
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.6 | $0-$5k | 0.00 |
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 proof-of-concept. 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)).
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), Tenable (68854) and Exploit-DB (25444). The entries 7738, 8176, 8568 and 8597 are related to this item.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
Video
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.1VulDB Meta Temp Score: 4.6
VulDB Base Score: 5.1
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Numeric errorCWE: CWE-189
ATT&CK: Unknown
Local: Yes
Remote: No
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: sd
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
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: 🔍
Qualys Name: 🔍
Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍
Upgrade: Kernel 3.8.9
Patch: git.kernel.org
Timeline
02/19/2013 🔍04/12/2013 🔍
04/15/2013 🔍
05/14/2013 🔍
05/14/2013 🔍
05/14/2013 🔍
05/14/2013 🔍
05/15/2013 🔍
05/16/2013 🔍
05/28/2013 🔍
07/12/2013 🔍
05/11/2021 🔍
Sources
Vendor: kernel.orgAdvisory: kernel.org
Researcher: Trinity
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2013-2094 (🔍)
OVAL: 🔍
X-Force: 84196
Vulnerability Center: 39639 - Linux Kernel Before 3.8.9 Local Privilege Escalation Vulnerability by Crafted perf_event_open System Call, High
Secunia: 53176 - Ubuntu update for kernel, Less Critical
OSVDB: 93361
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍
Entry
Created: 05/15/2013 16:42Updated: 05/11/2021 14:31
Changes: 05/15/2013 16:42 (90), 04/30/2017 10:35 (4), 05/11/2021 14:31 (3)
Complete: 🔍
No comments yet. Languages: en.
Please log in to comment.