fastjar: Directory traversal

1. Gentoo Linux Security Advisory

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-arch/fastjar	< 0.98-r1	>= 0.98-r1	All supported architectures

Related bugreports: #325557

Two directory traversal vulnerabilities have been found in fastjar, allowing remote attackers to create or overwrite arbitrary files.

2. Impact Information

fastjar is a Java archiver written in C.

Two directory traversal vulnerabilities have been discovered in fastjar. Please review the CVE identifiers referenced below for details.

A remote attacker could entice a user to open a specially crafted JAR file, possibly resulting in the creation or truncation of arbitrary files.

3. Resolution Information

There is no known workaround at this time.

All fastjar users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-arch/fastjar-0.98-r1"

4. References

Page updated September 28, 2012

Summary: This is a Gentoo Linux Security Advisory

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