VUPEN Security - Linux Kernel "ext3fs_dirhash()" Data Stream Handling Denial of Service Issue / Exploit (Security Advisories)

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>> Linux Kernel "ext3fs_dirhash()" Data Stream Handling Denial of Service Issue

Title : Linux Kernel "ext3fs_dirhash()" Data Stream Handling Denial of Service Issue
Advisory ID : VUPEN/ADV-2006-4458
CVE ID : CVE-2006-6053
Rated as : Low Risk

Remotely Exploitable : No
Locally Exploitable : Yes
Release Date : 2006-11-12

Advisory Details

Description

Affected Products

Solution

References

Technical Description

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A vulnerability has been identified in Linux Kernel, which could be exploited by malicious users to cause a denial of service. This flaw is due to errors in the "ext3fs_dirhash()", "ext3_readdir()", and "htree_dirblock_to_tree()" functions when handling corrupted data streams, which could be exploited by local attackers to crash a vulnerable system via a malicious ext3 image, creating a denial of service condition.

Credits

Vulnerability reported by LMH

ChangeLog

2006-11-12 : Initial release
2007-01-11 : Updated Solution

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