Joined: 12 May 2004
|Posted: Sun Feb 26, 2006 5:26 pm Post subject: [ GLSA 200602-14 ] noweb: Insecure temporary file creation
|Gentoo Linux Security Advisory
Title: noweb: Insecure temporary file creation (GLSA 200602-14)
Date: February 26, 2006
noweb is vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files.
noweb is a simple, extensible, and language independent literate programming tool.
Vulnerable: < 2.9-r5
Unaffected: >= 2.9-r5
Architectures: All supported architectures
Javier Fernandez-Sanguino has discovered that the lib/toascii.nw and shell/roff.mm scripts insecurely create temporary files with predictable filenames.
A local attacker could create symbolic links in the temporary file directory, pointing to a valid file somewhere on the filesystem. When an affected script is called, this would result in the file being overwritten with the rights of the user running the script.
There is no known workaround at this time.
All noweb users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/noweb-2.9-r5"
Last edited by GLSA on Sun May 07, 2006 5:00 pm; edited 1 time in total