DEBIAN-CVE-2026-12205
Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery. Crypt::DSA::sign caches the per-signature nonce material in the Key object without ever clearing it. The first sign() on a Key object picks a nonce, and every later sign() on that same object reuses it, producing an identical "r". Keys used to sign more than once with an affected version should be considered compromised.
DEBIAN-CVE-2026-12205
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-12205
libcrypt-dsa-perl
Source reference: /affected/0/package/name
- Affected versions
- 1.17-5
Source reference:
/affected/0/versions1.19-1Source reference:
/affected/0/versions1.20-1Source reference:
/affected/0/versions1.21-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
libcrypt-dsa-perl
Source reference: /affected/1/package/name
- Affected versions
- 1.19-1
Source reference:
/affected/1/versions1.20-1Source reference:
/affected/1/versions1.21-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libcrypt-dsa-perl",
"purl": "pkg:deb/debian/libcrypt-dsa-perl?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.17-5",
"1.19-1",
"1.20-1",
"1.21-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12205.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libcrypt-dsa-perl",
"purl": "pkg:deb/debian/libcrypt-dsa-perl?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.19-1",
"1.20-1",
"1.21-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12205.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55475 · Revision 1
- Added to Heist Feed
- Publisher date