[SECURITY] [DSA 3261-2] libmodule-signature-perl regression update
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Debian Security Advisory DSA-3261-2 security@debian.org
http://www.debian.org/security/ Salvatore Bonaccorso
May 20, 2015 http://www.debian.org/security/faq
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Package : libmodule-signature-perl
Debian Bug : 785701
The update for libmodule-signature-perl issued as DSA-3261-1 introduced
a regression in the handling of the --skip option of cpansign. Updated
packages are now available to address this regression. For reference,
the original advisory text follows.
Multiple vulnerabilities were discovered in libmodule-signature-perl, a
Perl module to manipulate CPAN SIGNATURE files. The Common
Vulnerabilities and Exposures project identifies the following problems:
CVE-2015-3406
John Lightsey discovered that Module::Signature could parses the
unsigned portion of the SIGNATURE file as the signed portion due to
incorrect handling of PGP signature boundaries.
CVE-2015-3407
John Lightsey discovered that Module::Signature incorrectly handles
files that are not listed in the SIGNATURE file. This includes some
files in the t/ directory that would execute when tests are run.
CVE-2015-3408
John Lightsey discovered that Module::Signature uses two argument
open() calls to read the files when generating checksums from the
signed manifest. This allows to embed arbitrary shell commands into
the SIGNATURE file that would execute during the signature
verification process.
CVE-2015-3409
John Lightsey discovered that Module::Signature incorrectly handles
module loading, allowing to load modules from relative paths in
@INC. A remote attacker providing a malicious module could use this
issue to execute arbitrary code during signature verification.
For the oldstable distribution (wheezy), this problem has been fixed in
version 0.68-1+deb7u3.
For the stable distribution (jessie), this problem has been fixed in
version 0.73-1+deb8u2.
For the unstable distribution (sid), this problem has been fixed in
version 0.79-1.
We recommend that you upgrade your libmodule-signature-perl packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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