Linux Kernel 3.8.0/3.8.1/3.8.2/3.8.3 fs/ext3/super.c ext3_blkdev_get/get_sb_block input validation

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7.1$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel 3.8.0/3.8.1/3.8.2/3.8.3. Affected is the function ext3_blkdev_get/get_sb_block of the file fs/ext3/super.c. Performing a manipulation results in input validation. This vulnerability was named CVE-2013-1848. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel 3.8.0/3.8.1/3.8.2/3.8.3 (Operating System). This affects the function ext3_blkdev_get/get_sb_block of the file fs/ext3/super.c. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

fs/ext3/super.c in the Linux kernel before 3.8.4 uses incorrect arguments to functions in certain circumstances related to printk input, which allows local users to conduct format-string attacks and possibly gain privileges via a crafted application.

The weakness was presented 03/11/2013 by Lars-Peter Clausen as not defined mailinglist post (oss-sec). The advisory is shared at seclists.org. The public release was coordinated in cooperation with Linux. This vulnerability is uniquely identified as CVE-2013-1848 since 02/19/2013. The exploitability is told to be difficult. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 68940 (CentOS 6 : kernel (CESA-2013:1051)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350526 (Amazon Linux Security Advisory for kernel: ALAS-2013-218).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (68940), SecurityFocus (BID 58600†), OSVDB (91567†), Secunia (SA52661†) and Vulnerability Center (SBV-38854†). See VDB-7997, VDB-8484, VDB-8499 and VDB-8568 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.4
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68940
Nessus Name: CentOS 6 : kernel (CESA-2013:1051)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 881773
OpenVAS Name: CentOS Update for kernel CESA-2013:1051 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

02/19/2013 🔍
03/11/2013 +20 days 🔍
03/11/2013 +0 days 🔍
03/12/2013 +1 days 🔍
03/12/2013 +0 days 🔍
03/20/2013 +8 days 🔍
03/21/2013 +1 days 🔍
03/22/2013 +1 days 🔍
03/25/2013 +3 days 🔍
05/06/2021 +2964 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: seclists.org
Researcher: Lars-Peter Clausen
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-1848 (🔍)
GCVE (CVE): GCVE-0-2013-1848
GCVE (VulDB): GCVE-100-8073

OVAL: 🔍

SecurityFocus: 58600 - Linux Kernel CVE-2013-1848 Local Privilege Escalation Vulnerability
Secunia: 52661 - Linux Kernel ext3 Message Logging Format String Vulnerabilities, Less Critical
OSVDB: 91567
Vulnerability Center: 38854 - Linux Kernel <3.8.4 Local Privilege Escalation Vulnerability - CVE-2013-1848, High

See also: 🔍

Entryinfo

Created: 03/25/2013 15:38
Updated: 05/06/2021 14:49
Changes: 03/25/2013 15:38 (79), 04/26/2017 09:12 (4), 05/06/2021 14:49 (3)
Complete: 🔍
Committer:
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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