Description
The Crypt::DSA (aka Crypt-DSA) module 1.17 and earlier for Perl, when /dev/random is absent, uses the Data::Random module, which makes it easier for remote attackers to spoof a signature, or determine the signing key of a signed message, via a brute-force attack.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | libcrypt-dsa-perl | 1.17-3 | — |
| Debian 12 | libcrypt-dsa-perl | 1.17-3 | — |
References
- 49928 vdb-entry
- [oss-security] 20111005 Re: CVE Request -- perl-Crypt-DSA -- Cryptographically insecure method used for random numbers generation on systems without /dev/random mailing-list
- 76025 vdb-entry
- https://rt.cpan.org/Public/Bug/Display.html?id=71421
- https://bugzilla.redhat.com/show_bug.cgi?id=743567
- [oss-security] 20111005 CVE Request -- perl-Crypt-DSA -- Cryptographically insecure method used for random numbers generation on systems without /dev/random mailing-list
- 46275 third-party-advisory