Linux Kernel fs/eventpoll.c denial of service

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5.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel. This issue affects some unknown processing of the file fs/eventpoll.c. The manipulation results in denial of service. This vulnerability was named CVE-2012-3375. In addition, an exploit is available.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (affected version not known). It has been classified as problematic. Affected is some unknown functionality of the file fs/eventpoll.c. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

The epoll_ctl system call in fs/eventpoll.c in the Linux kernel before 3.2.24 does not properly handle ELOOP errors in EPOLL_CTL_ADD operations, which allows local users to cause a denial of service (file-descriptor consumption and system crash) via a crafted application that attempts to create a circular epoll dependency. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1083.

The weakness was presented 07/05/2012 by Yurij M. Plotnikov as confirmed advisory (Red Hat Security Advisory). The advisory is available at rhn.redhat.com. The vendor was not involved in the coordination of the public release. This vulnerability is traded as CVE-2012-3375 since 06/14/2012. The exploitability is told to be easy. Local access is required to approach this attack. A authentication is required for exploitation. Technical details and a public exploit are known.

A public exploit has been developed by Yurij M. Plotnikov and been published immediately after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 68573 (Oracle Linux 5 : kernel (ELSA-2012-1061-1)), 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 166783 (SUSE Enterprise Linux Security Update for Linux Kernel (SUSE-SU-2014:0287-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (76745), Exploit-DB (19605), Tenable (68573), SecurityFocus (BID 46630†) and OSVDB (83687†). See VDB-5386, VDB-5571, VDB-5582 and VDB-5656 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.5
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Yurij M. Plotnikov
Download: 🔍

EPSS Score: 🔍
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Current Price Estimation: 🔍

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Nessus ID: 68573
Nessus Name: Oracle Linux 5 : kernel (ELSA-2012-1061-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881076
OpenVAS Name: CentOS Update for kernel CESA-2012:1061 centos5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
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Timelineinfo

03/02/2011 🔍
06/14/2012 +470 days 🔍
07/04/2012 +20 days 🔍
07/05/2012 +1 days 🔍
07/05/2012 +0 days 🔍
07/05/2012 +0 days 🔍
07/09/2012 +4 days 🔍
07/10/2012 +1 days 🔍
07/10/2012 +0 days 🔍
07/17/2012 +7 days 🔍
07/19/2012 +2 days 🔍
10/03/2012 +76 days 🔍
07/12/2013 +282 days 🔍
09/29/2024 +4097 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: rhn.redhat.com
Researcher: Yurij M. Plotnikov
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-3375 (🔍)
GCVE (CVE): GCVE-0-2012-3375
GCVE (VulDB): GCVE-100-5658

OVAL: 🔍

X-Force: 76745
SecurityFocus: 46630 - Linux Kernel epoll Subsystem 'eventpoll.c' Multiple Local Denial of Service Vulnerabilities
Secunia: 49741 - Red Hat update for kernel, Not Critical
OSVDB: 83687
SecurityTracker: 1027237 - Linux Kernel epoll_ctl() Bug Lets Local Users Deny Service
Vulnerability Center: 35546 - Linux Kernel Even Poll Resource Cleanup Local Denial of Service Vulnerability, Medium

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

Entryinfo

Created: 07/19/2012 15:50
Updated: 09/29/2024 07:16
Changes: 07/19/2012 15:50 (77), 04/14/2017 14:15 (16), 03/26/2021 09:39 (3), 09/29/2024 07:16 (14)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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