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Website META Language: Insecure temporary file usage


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200803-23 / wml
Release Date March 15, 2008
Latest Revision March 15, 2008: 01
Impact normal
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
dev-lang/wml < 2.0.11-r3 >= 2.0.11-r3 All supported architectures

Related bugreports: #209927


Multiple insecure temporary file vulnerabilities have been discovered in the Website META Language.

2.  Impact Information


Website META Language is a free and extensible Webdesigner's off-line HTML generation toolkit for Unix.


Temporary files are handled insecurely in the files wml_backend/p1_ipp/ipp.src, wml_contrib/wmg.cgi, and wml_backend/p3_eperl/eperl_sys.c, allowing users to overwrite or delete arbitrary files with the privileges of the user running the program.


Local users can exploit the insecure temporary file vulnerabilities via symlink attacks to perform certain actions with escalated privileges.

3.  Resolution Information


Restrict access to the temporary directory to trusted users only.


All Website META Language users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/wml-2.0.11-r3"

4.  References


Page updated March 15, 2008

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