6836 : CVS CVSROOT Configuration File Empty Line Underflow
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Info

Last Modified
about 1 year ago

Percent Complete
90%

Disclosure
Jun 09, 2004

Discovery
May 20, 2004

Dates

Exploit
Unknown

Solution
Unknown

Description

 A local overflow exists in CVS stable and CVS feature. CVS fails to adequately handle configuration files stored in CVSROOT containing empty lines, resulting in a single byte underflow. By providing such a formatted configuration file, an attacker can trigger the issue, resulting in a loss of availability and possibly other effects. It should be noted that only users with the COMMIT privilege can properly exploit this issue. It is further reported that only big-endian architectures (eg, SPARC, as opposed to Intel) should be affected adversely by this problem.

Classification

 Location: Local Access Required
Attack Type: Input Manipulation
Impact: Loss of Availability
Exploit: Exploit Unknown
Disclosure: OSVDB Verified

Solution

 Upgrade to CVS stable 1.11.17, or CVS feature 1.12.9, or higher, as it has been reported to fix this vulnerability. Also, refrain from giving untrusted users COMMIT access to CVS.

Products
CVS
Watch-list
CVS Feature Release
Watch-list
 1.12.8
CVS Stable Release
Watch-list
 1.11.16

References

Tools & Filters
12265 12500 13723 13724 14157 14517 14812 15354 18779

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 10.0
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

Access_vector_2 Access_complexity_2 Authentication_2 Confidentiality_impact_2 Integrity_impact_2 Availability_impact_2

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