{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-14570", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2026-07-03T10:37:19.787Z", "datePublished": "2026-07-05T01:30:12.849Z", "dateUpdated": "2026-07-06T13:42:11.715Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "packageName": "Crypt-DSA", "product": "Crypt::DSA", "programFiles": ["lib/Crypt/DSA/Util.pm", "lib/Crypt/DSA.pm", "lib/Crypt/DSA/KeyChain.pm"], "programRoutines": [{"name": "Crypt::DSA::Util::makerandom"}, {"name": "Crypt::DSA::sign"}, {"name": "Crypt::DSA::KeyChain::generate_keys"}], "repo": "https://github.com/perl-Crypt-OpenPGP/Crypt-DSA", "vendor": "TIMLEGGE", "versions": [{"lessThan": "1.22", "status": "affected", "version": "0", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "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.\n\n\"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.\"\n\nAn 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.\n\nKeys used to sign with an affected version should be considered compromised and new keys should be generated."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-330", "description": "CWE-330 Use of Insufficiently Random Values", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-07-05T01:30:12.849Z"}, "references": [{"url": "https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.21/source/lib/Crypt/DSA/Util.pm#L56"}, {"url": "https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.22/diff/TIMLEGGE/Crypt-DSA-1.21#lib/Crypt/DSA/Util.pm"}, {"tags": ["release-notes"], "url": "https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.22/changes"}], "solutions": [{"lang": "en", "value": "Upgrade to version 1.22 or later, which draws the nonce and private key uniformly via rejection sampling (Crypt::DSA::Util::randombelow) with no forced high bit.\n\nRevoke and regenerate any keys used to sign with an affected version.\n\nCrypt::DSA was deprecated in version 1.20. You should migrate to another solution."}], "source": {"discovery": "UNKNOWN"}, "title": "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", "x_generator": {"engine": "cpansec-cna-tool 0.1"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/07/05/1"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-07-05T05:19:58.316Z"}}, {"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-07-06T13:41:52.097549Z", "id": "CVE-2026-14570", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-06T13:42:11.715Z"}}]}}

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{"affected": [{"affectedData": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "packageName": "Crypt-DSA", "product": "Crypt::DSA", "programFiles": ["lib/Crypt/DSA/Util.pm", "lib/Crypt/DSA.pm", "lib/Crypt/DSA/KeyChain.pm"], "programRoutines": [{"name": "Crypt::DSA::Util::makerandom"}, {"name": "Crypt::DSA::sign"}, {"name": "Crypt::DSA::KeyChain::generate_keys"}], "repo": "https://github.com/perl-Crypt-OpenPGP/Crypt-DSA", "vendor": "TIMLEGGE", "versions": [{"lessThan": "1.22", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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.\n\n\"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.\"\n\nAn 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.\n\nKeys used to sign with an affected version should be considered compromised and new keys should be generated."}], "id": "CVE-2026-14570", "lastModified": "2026-07-06T18:16:45.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-14570", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-06T13:41:52.097549Z", "version": "2.0.3"}}]}, "published": "2026-07-05T02:17:40.190", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.21/source/lib/Crypt/DSA/Util.pm#L56"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.22/changes"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.22/diff/TIMLEGGE/Crypt-DSA-1.21#lib/Crypt/DSA/Util.pm"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/07/05/1"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-330"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{"bugzilla": {"description": "Crypt::DSA: Crypt::DSA: Private key recovery due to biased random number generation", "id": "2497106", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2497106"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-338", "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.\n\"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.\"\nAn 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.\nKeys used to sign with an affected version should be considered compromised and new keys should be generated.", "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 number of signatures and have access to the public key. This vulnerability compromises the confidentiality of the private key."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-14570", "public_date": "2026-07-05T01:30:12Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-14570\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-14570\nhttps://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.21/source/lib/Crypt/DSA/Util.pm#L56\nhttps://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.22/changes\nhttps://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.22/diff/TIMLEGGE/Crypt-DSA-1.21#lib/Crypt/DSA/Util.pm"], "statement": "A flaw was found in the Perl Crypt::DSA module. The random number generator used for DSA signing nonces and private key generation has a bias (the high bit is always set), allowing an attacker who collects a modest number of signatures to recover the private key via a lattice attack. Red Hat does not ship perl-Crypt-DSA in any supported product. This issue only affects the perl-Crypt-DSA package available in Fedora and EPEL community repositories.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,1.22)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Crypt::DSA", "source": "cna", "vendor": "TIMLEGGE"}, "product": "crypt::dsa", "vendor": "timlegge"}], "created": "2026-07-05T03:30:05.365068+00:00", "updated": "2026-07-31T14:45:03.275486+00:00", "vendors": ["timlegge", "timlegge$PRODUCT$crypt::dsa"]}