Linux Kernel 3.3.7.1 btrfs CRC32C cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Kernel 3.3.7.1. This issue affects some unknown processing of the component btrfs CRC32C. The manipulation results in cryptographic issue. This vulnerability is identified as CVE-2012-5374. Additionally, an exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel 3.3.7.1 (Operating System). Affected is an unknown functionality of the component btrfs CRC32C. The manipulation with an unknown input leads to a cryptographic issue vulnerability. CWE is classifying the issue as CWE-310. This is going to have an impact on availability. CVE summarizes:

The CRC32C feature in the Btrfs implementation in the Linux kernel before 3.8-rc1 allows local users to cause a denial of service (extended runtime of kernel code) by creating many different files whose names are associated with the same CRC32C hash value.

The weakness was released 12/13/2012 by Pascal Junod as 463 as not defined mailinglist post (Website). The advisory is shared for download at seclists.org. The public release happened without coordination with the vendor. This vulnerability is traded as CVE-2012-5374 since 10/10/2012. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1600.

After immediately, there has been an exploit disclosed. The exploit is shared for download at crypto.junod.info. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 29 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 74913 (openSUSE Security Update : kernel (openSUSE-SU-2013:0395-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195954 (Ubuntu Security Notification for Linux-lts-quantal Vulnerabilities (USN-1947-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

The vulnerability is also documented in the databases at X-Force (80678), Tenable (74913), SecurityFocus (BID 56940†), OSVDB (88440†) and Secunia (SA52507†). Further details are available at arstechnica.com. Entries connected to this vulnerability are available at VDB-7177, VDB-9054 and VDB-10265. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.5
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
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: 74913
Nessus Name: openSUSE Security Update : kernel (openSUSE-SU-2013:0395-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 850425
OpenVAS Name: SuSE Update for kernel openSUSE-SU-2013:0395-1 (kernel)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Patch: git.kernel.org

Timelineinfo

10/10/2012 🔍
11/14/2012 +35 days 🔍
12/13/2012 +29 days 🔍
12/13/2012 +0 days 🔍
12/13/2012 +0 days 🔍
12/13/2012 +0 days 🔍
12/17/2012 +4 days 🔍
02/18/2013 +63 days 🔍
03/06/2013 +16 days 🔍
05/30/2013 +85 days 🔍
06/13/2014 +379 days 🔍
04/20/2021 +2503 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 463
Researcher: Pascal Junod
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-5374 (🔍)
GCVE (CVE): GCVE-0-2012-5374
GCVE (VulDB): GCVE-100-7176

OVAL: 🔍

X-Force: 80678 - Linux Kernel Btrfs CRC32C denial of service, Medium Risk
SecurityFocus: 56940 - Linux Kernel Btrfs CRC32C feature CVE-2012-5375 Security Bypass Vulnerability
Secunia: 52507 - SUSE update for kernel, Less Critical
OSVDB: 88440
Vulnerability Center: 39780 - Linux Kernel Before 3.8-rc1 CRC32C Feature Allows Local DoS Vulnerability, Low

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

Entryinfo

Created: 12/17/2012 16:48
Updated: 04/20/2021 11:34
Changes: 12/17/2012 16:48 (92), 05/01/2017 11:20 (1), 04/20/2021 11:34 (3)
Complete: 🔍
Committer:
Cache ID: 216:663:103

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