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[ GLSA 200602-14 ] noweb: Insecure temporary file creation
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GLSA
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PostPosted: Sun Feb 26, 2006 5:26 pm    Post subject: [ GLSA 200602-14 ] noweb: Insecure temporary file creation Reply with quote

Gentoo Linux Security Advisory

Title: noweb: Insecure temporary file creation (GLSA 200602-14)
Severity: normal
Exploitable: local
Date: February 26, 2006
Bug(s): #122705
ID: 200602-14

Synopsis

noweb is vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files.

Background

noweb is a simple, extensible, and language independent literate programming tool.

Affected Packages

Package: app-text/noweb
Vulnerable: < 2.9-r5
Unaffected: >= 2.9-r5
Architectures: All supported architectures


Description

Javier Fernandez-Sanguino has discovered that the lib/toascii.nw and shell/roff.mm scripts insecurely create temporary files with predictable filenames.

Impact

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.

Workaround

There is no known workaround at this time.

Resolution

All noweb users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/noweb-2.9-r5"


References

CVE-2005-3342


Last edited by GLSA on Sun May 07, 2006 5:00 pm; edited 1 time in total
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