GLSA Advocate
Joined: 12 May 2004 Posts: 2663
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Posted: Sun Feb 26, 2006 5:26 pm Post subject: [ GLSA 200602-14 ] noweb: Insecure temporary file creation |
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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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