{"id":"CVE-2009-0050","aliases":["DEBIAN-CVE-2009-0050","DSA-1700-1","EUVD-2009-0059","GHSA-7ccf-7vx8-76vm"],"status":"published","title":"Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify...","description":"Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01336,"percentile":0.71413,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2009-01-07T18:00:00Z","modified":"2026-10-23T17:47:28Z","fixes":[{"ecosystem":"Debian:12","package":"lasso","fixed_in":["2.2.1-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"lasso","fixed_in":["2.2.1-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"lasso","fixed_in":["2.2.1-2"],"sources":["osv"]},{"ecosystem":"Debian:4.0","package":"lasso","fixed_in":["0.6.5-3+etch1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"lasso","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.1-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"lasso","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.1-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"lasso","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.1-2"}]}]},{"source":"osv","ecosystem":"Debian:4.0","package":"lasso","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.5-3+etch1"}]}],"versions":["0.6.5-3"]}],"products":[{"vendor":"entrouvert","product":"lasso"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/47837","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"http://www.securityfocus.com/archive/1/499827/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","web"]},{"url":"http://www.ocert.org/advisories/ocert-2008-016.html","tags":["x_refsource_MISC","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-0050"},{"url":"https://github.com/advisories/GHSA-7ccf-7vx8-76vm"},{"url":"https://security-tracker.debian.org/tracker/CVE-2009-0050","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2009-0050","description":"Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.","status":"published","published":"2009-01-07T18:00:00Z","modified":"2024-08-07T04:17:10.472Z","updated_at":"2026-11-02T14:33:25.896677Z"}],"euvd":[{"id":"EUVD-2009-0059","description":"Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.","status":"published","published":"2009-01-07T18:00:00Z","modified":"2024-08-07T04:17:10Z","updated_at":"2026-11-03T01:39:27.659956Z"}],"ghsa":[{"id":"GHSA-7ccf-7vx8-76vm","title":"Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify...","description":"Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.","status":"published","published":"2022-05-02T03:12:34Z","modified":"2023-01-31T05:07:00Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:49:07.796746Z"}],"nvd":[{"id":"CVE-2009-0050","description":"Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.","status":"published","published":"2009-01-07T18:30:15.86Z","modified":"2026-06-16T23:04:10.103Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:01:33.417327Z"}],"osv":[{"id":"CVE-2009-0050","description":"Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.","status":"published","published":"2009-01-07T18:30:15Z","modified":"2026-04-10T03:40:32.578962Z","updated_at":"2026-11-02T15:43:57.452479Z"},{"id":"DEBIAN-CVE-2009-0050","description":"Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.","status":"published","published":"2009-01-07T18:30:15.86Z","modified":"2026-10-23T17:47:28.214156549Z","updated_at":"2026-11-02T15:45:23.742363Z"},{"id":"DSA-1700-1","title":"lasso - validation bypass","status":"published","published":"2009-01-11T00:00:00Z","modified":"2026-03-09T01:23:36.80669Z","updated_at":"2026-11-02T15:46:14.734124Z"}]}}