CVE-2026-14570

A flaw was found in Crypt::DSA. Versions before 1.22 for Perl use a biased random number generator when creating the Digital Signature Algorithm DSA signing nonce and private key. This bias allows a remote attacker to recover the private key through a lattice attack if they collect a sufficient...

CVE-2026-14570 Crypt::DSA versions before 1.22 for Perl draw the DSA signing nonce and private key from a biased random generator, leading to private-key recovery

Crypt::DSA versions before 1.22 for Perl draw the DSA signing nonce and private key from a biased random generator, leading to private-key recovery. "Crypt::DSA::Util::makerandom forces the high bit of every value it returns to obtain an exactly N-bit integer for prime search. The signing nonce a...

CVE-2026-14570

CVE-2026-14570 affects Crypt::DSA for Perl up to version 1.21, where Crypt::DSA::Util::makerandom biases the top bit to produce N-bit integers. This causes the DSA signing nonce and the private key to be drawn from a non-uniform distribution. Attackers who observe a modest number of signatures un...