78509 : Linux Kernel /proc/<pid>/mem Access Restriction Weakness Local Privilege Escalation
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Timeline

Disclosure Date
2012-01-17

Description

Linux Kernel contains a flaw that leads to unauthorized privileges being gained. The issue is due to the mem_write function not properly validating permissions when writing to /proc/&lt;pid&gt;/mem and may allow a local attacker to gain privileges by modifying process memory.

Classification

Location: Local Access Required
Attack Type: Input Manipulation
Impact: Loss of Integrity
Solution: Patch / RCS, Third-Party Solution
Exploit: Exploit Public
Disclosure: Vendor Verified, Third-party Verified
OSVDB: Authentication Required

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, Linus Torvalds and multiple Linux distributions have released a patch to address this vulnerability. Check the related advisories, changelogs, or solutions in the references section.

Products

Linux Kernel Organization, Inc.
Kernel
2.6.39

References

Tools & Filters

CVE_2012_0056

Credit

CVSSv2 Score

CVSSv2 Base Score = 6.9
Source: nvd.nist.gov | Generated: 2012-01-30 | Disagree?

Access_vector_0 Access_complexity_1 Authentication_2 Confidentiality_impact_2 Integrity_impact_2 Availability_impact_2

Comments

No Comments.

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