6000 : FreeBSD gdc Symlink Arbitrary File Modification
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Views This Week Views All Time Added to OSVDB Last Modified Modified (since 2008) Percent Complete
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Timeline

Disclosure Date
1999-11-30

Description

FreeBSD contains a flaw that may allow a malicious user to gain access to unauthorized privileges. The issue is triggered when a malicious user creates a symbolic link which is traversed by gdc when writing its debug ouput to a file, typically and inappropriately redirected to "/var/tmp/gated_dump" or "/var/tmp/gdb_dump". This flaw can be used to overwrite any file on the victim system as gdc runs setuid root and may consequently lead to a loss of integrity.

Classification

Location: Local Access Required
Attack Type: Input Manipulation, Race Condition
Impact: Loss of Integrity
Exploit: Exploit Public

Solution

Currently, there are no known upgrades, patches, or workarounds available to correct this issue.

Products

The FreeBSD Project
FreeBSD
3.3

References

Credit

  • Brock Tellier - btellierwebley.com -

CVSSv2 Score

CVSSv2 Base Score = 2.1
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

Access_vector_0 Access_complexity_2 Authentication_2 Confidentiality_impact_0 Integrity_impact_1 Availability_impact_0

Comments

No Comments.

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