13057 : SCO UnixWare Chroot Unspecified Escape
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Timeline

Disclosure Date
2005-01-14

Description

A chroot() call is implemented in AtheOS, and its behavior is supposed to be POSIX conformant. Once chroot(<directory>) is issued by a process, <directory> should become the base directory ('/') with no way to go out of the jail. That feature is widely used to protect applications against unwanted directory traversals (ftp, http, etc.) . After a chroot() call on AtheOS, '/' indeed seems to become the base directory. '/path/to/file' is translated to '<directory>/path/to/file' . Unfortunately, relative paths aren't checked against the current chroot jail. Therefore, '../../../../path/to/file' will be translated to a file out of the chroot limits.

Classification

Unknown or Incomplete

Products

Unknown or Incomplete

References

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 4.6
Source: nvd.nist.gov | Generated: 2005-06-17 | Disagree?

Access_vector_0 Access_complexity_2 Authentication_2 Confidentiality_impact_1 Integrity_impact_1 Availability_impact_1

Comments

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