id3lib: Insecure temporary file creation

1. Gentoo Linux Security Advisory

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-libs/id3lib	< 3.8.3-r6	>= 3.8.3-r6	All supported architectures

Related bugreports: #189610

A vulnerability has been discovered in id3lib allowing local users to overwrite arbitrary files via a symlink attack.

2. Impact Information

id3lib is an open-source, cross-platform software development library for reading, writing, and manipulating ID3v1 and ID3v2 tags.

Nikolaus Schulz discovered that the function RenderV2ToFile() in file src/tag_file.cpp creates temporary files in an insecure manner.

A local attacker could exploit this vulnerability via a symlink attack to overwrite arbitrary files.

3. Resolution Information

There is no known workaround at this time.

All id3lib users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/id3lib-3.8.3-r6"

4. References

Page updated September 15, 2007

Summary: This is a Gentoo Linux Security Advisory

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