73872 : Linux Kernel fs/proc/array.c do_task_stat Function Local ASLR Protection Mechanism Bypass
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Timeline

Disclosure Date
2011-03-11

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2011-0726" target="_blank">CVE</a>)</em> : The do_task_stat function in fs/proc/array.c in the Linux kernel before 2.6.39-rc1 does not perform an expected uid check, which makes it easier for local users to defeat the ASLR protection mechanism by reading the start_code and end_code fields in the /proc/#####/stat file for a process executing a PIE binary.

Classification

Location: Local Access Required
Impact: Loss of Integrity
Solution: Patch / RCS, Upgrade
Disclosure: Vendor Verified

Solution

Upgrade to version 2.6.39-rc1 or higher, as it has been reported to fix this vulnerability. In addition, vendors have released a patch for some older versions.

Products

Unknown or Incomplete

References

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 2.1
Source: nvd.nist.gov | Generated: 2011-07-19 | Disagree?

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