CVE-2026-14570— TIMLEGGE Crypt::DSA 加密问题漏洞

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 and the private key are drawn from makerandom. Because the high bit is always set, the result is not uniform: its top bit is fixed, producing insecure values." An attacker who collects a modest number of signatures under an affected key, together with the public key, can recover the private key with a lattice attack. Keys used to sign with an affected version should be considered compromised and new keys should be generated.

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使用不充分的随机数

TIMLEGGE Crypt::DSA 加密问题漏洞

timlegge Crypt::DSA是timlegge的数字签名库。 TIMLEGGE Crypt::DSA 1.22之前版本存在加密问题漏洞，该漏洞源于使用有偏见的随机生成器生成DSA签名随机数和私钥，导致私钥可被恢复。

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