Date: Thu, 23 Apr 2015 07:44:12 +0200 From: Salvatore Bonaccorso <carnil@...ian.org> To: oss-security@...ts.openwall.com Cc: CVE Assignments MITRE <cve-assign@...re.org> Subject: Re: CVE request: Module::Signature before 0.75 - multiple vulnerabilities Hi, On Mon, Apr 06, 2015 at 11:52:09PM -0500, John Lightsey wrote: > Hi there, > > A new version of Module::Signature, was released to fix multiple > vulnerabilities. Module::Signature is used by most CPAN clients to > validate PAUSE GPG signature files on the CPAN mirrors and GPG signature > files inside individual Perl module tarballs. > > The changelog for the 0.75 version is here: > > https://metacpan.org/changes/distribution/Module-Signature > > This commit fixes three flaws: > > https://github.com/audreyt/module-signature/commit/8a9164596fa5952d4fbcde5aa1c7d1c7bc85372f > > - Module::Signature could be tricked into interpreting the unsigned > portion of a SIGNATURE file as the signed portion due to faulty parsing > of the PGP signature boundaries. > > - When verifying the contents of a CPAN module, Module::Signature > ignored some files in the extracted tarball that were not listed in the > signature file. This included some files in the t/ directory that would > execute automatically during "make test" > > - When generating checksums from the signed manifest, Module::Signature > used two argument open() calls to read the files. This allowed embedding > arbitrary shell commands into the SIGNATURE file that would execute > during the signature verification process. > > This commit fixes one more flaw: > > https://github.com/audreyt/module-signature/commit/c41e8885b862b9fce2719449bc9336f0bea658ef > > - Several modules were loaded at runtime inside the extracted module > directory. Modules like Text::Diff are not guaranteed to be available on > all platforms and could be added to a malicious module so that they > would load from the '.' path in @INC. Adding explicitly CVE assignment team from MITRE into the loop. Regards, Salvatore
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