Linux Kernel 2.6.28.2 cifs_readdir memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel 2.6.28.2. This affects the function cifs_readdir. The manipulation results in memory corruption. This vulnerability is identified as CVE-2009-1633. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.28.2 (Operating System). It has been classified as critical. Affected is the function cifs_readdir. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on availability. CVE summarizes:

Multiple buffer overflows in the cifs subsystem in the Linux kernel before 2.6.29.4 allow remote CIFS servers to cause a denial of service (memory corruption) and possibly have unspecified other impact via (1) a malformed Unicode string, related to Unicode string area alignment in fs/cifs/sess.c; or (2) long Unicode characters, related to fs/cifs/cifssmb.c and the cifs_readdir function in fs/cifs/readdir.c.

The bug was discovered 04/20/2009. The weakness was released 05/28/2009 (Website). The advisory is shared for download at redhat.com. This vulnerability is traded as CVE-2009-1633 since 05/14/2009. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 154 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 44621 (openSUSE Security Update : kernel (kernel-1908)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165661 (SUSE Enterprise Linux Security Update Linux Kernel (SUSE-SA:2009:054)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 9 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (51817), Tenable (44621), SecurityFocus (BID 34612†), OSVDB (54498†) and Secunia (SA35217†). Entries connected to this vulnerability are available at VDB-47913, VDB-50693, VDB-50092 and VDB-49467. 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: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 44621
Nessus Name: openSUSE Security Update : kernel (kernel-1908)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 64111
OpenVAS Name: Debian Security Advisory DSA 1809-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

12/25/2008 🔍
04/20/2009 +116 days 🔍
04/20/2009 +0 days 🔍
04/20/2009 +0 days 🔍
04/21/2009 +1 days 🔍
05/14/2009 +23 days 🔍
05/28/2009 +14 days 🔍
05/28/2009 +0 days 🔍
02/03/2010 +251 days 🔍
02/16/2010 +13 days 🔍
03/17/2015 +1855 days 🔍
09/02/2019 +1630 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: redhat.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-1633 (🔍)
GCVE (CVE): GCVE-0-2009-1633
GCVE (VulDB): GCVE-100-48336

OVAL: 🔍

X-Force: 51817
SecurityFocus: 34612 - Linux Kernel CIFS 'decode_unicode_ssetup()' Remote Buffer Overflow Vulnerability
Secunia: 35217
OSVDB: 54498 - CVE-2009-1633 - Linux - Kernel - Multiple Buffer Overflow Issues
Vulnerability Center: 21670 - Linux Kernel <2.6.29.4 CIFS Decode Unicode Remote Arbitrary Code Execution or DoS Vulnerability, Critical
Vupen: ADV-2009-3316

See also: 🔍

Entryinfo

Created: 03/17/2015 23:38
Updated: 09/02/2019 09:11
Changes: 03/17/2015 23:38 (76), 09/02/2019 09:11 (10)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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