DEBIAN-CVE-2026-14570
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-14570
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-14570.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-14570
- Upstream
- Published
- 2026-07-05T02:17:40Z
- Modified
- 2026-09-14T17:02:46Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Debian:12 / libcrypt-dsa-perl
Package
- Name
- libcrypt-dsa-perl
- Purl
- pkg:deb/debian/libcrypt-dsa-perl?arch=source&distro=bookworm
Debian:13 / libcrypt-dsa-perl
Package
- Name
- libcrypt-dsa-perl
- Purl
- pkg:deb/debian/libcrypt-dsa-perl?arch=source&distro=trixie