{"id":"CVE-2013-5580","aliases":["EUVD-2013-5420","GHSA-8g77-rrv8-793x","MGASA-2013-0265"],"status":"published","title":"The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through...","description":"The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through 20.2, when the configuration option NoticeAuth is enabled, does not properly handle the return code for the Handle_Write function, which allows remote attackers to cause a denial of service (assertion failure and server crash) via unspecified vectors, related to a \"notice auth\" message not being sent to a new client.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02322,"percentile":0.8359,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2013-08-30T17:33:18Z","modified":"2026-06-16T23:59:02Z","fixes":[{"ecosystem":"Mageia:3","package":"ngircd","fixed_in":["20.3-1.mga3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Mageia:3","package":"ngircd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20.3-1.mga3"}]}]}],"products":[{"vendor":"barton","product":"ngircd"}],"references":[{"url":"http://arthur.barton.de/pipermail/ngircd-ml/2013-August/000645.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://osvdb.org/96590","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://freecode.com/projects/ngircd/releases/357245","tags":["x_refsource_CONFIRM","x_transferred","Patch"]},{"url":"http://secunia.com/advisories/54567","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd.git%3Ba=commit%3Bh=309122017ebc6fff039a7cab1b82f632853d82d5","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115047.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115077.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-5580"},{"url":"http://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd.git;a=commit;h=309122017ebc6fff039a7cab1b82f632853d82d5"},{"url":"https://github.com/advisories/GHSA-8g77-rrv8-793x"},{"url":"https://advisories.mageia.org/MGASA-2013-0265.html","tags":["advisory"]},{"url":"http://ngircd.barton.de/news.php.en","tags":["web"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=11082","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2013-5580","description":"The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through 20.2, when the configuration option NoticeAuth is enabled, does not properly handle the return code for the Handle_Write function, which allows remote attackers to cause a denial of service (assertion failure and server crash) via unspecified vectors, related to a \"notice auth\" message not being sent to a new client.","status":"published","published":"2013-10-01T19:00:00Z","modified":"2024-09-16T20:12:43.097Z","updated_at":"2026-11-02T14:34:55.508771Z"}],"euvd":[{"id":"EUVD-2013-5420","description":"The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through 20.2, when the configuration option NoticeAuth is enabled, does not properly handle the return code for the Handle_Write function, which allows remote attackers to cause a denial of service (assertion failure and server crash) via unspecified vectors, related to a \"notice auth\" message not being sent to a new client.","status":"published","published":"2013-10-01T19:00:00Z","modified":"2024-09-16T20:12:43Z","updated_at":"2026-11-03T00:55:15.889317Z"}],"ghsa":[{"id":"GHSA-8g77-rrv8-793x","title":"The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through...","description":"The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through 20.2, when the configuration option NoticeAuth is enabled, does not properly handle the return code for the Handle_Write function, which allows remote attackers to cause a denial of service (assertion failure and server crash) via unspecified vectors, related to a \"notice auth\" message not being sent to a new client.","status":"published","published":"2022-05-17T05:03:35Z","modified":"2025-04-11T04:15:29Z","cwes":["CWE-20"],"updated_at":"2026-11-02T15:01:14.923786Z"}],"nvd":[{"id":"CVE-2013-5580","description":"The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through 20.2, when the configuration option NoticeAuth is enabled, does not properly handle the return code for the Handle_Write function, which allows remote attackers to cause a denial of service (assertion failure and server crash) via unspecified vectors, related to a \"notice auth\" message not being sent to a new client.","status":"published","published":"2013-10-01T19:55:09.507Z","modified":"2026-06-16T23:59:02.89Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:38.715467Z"}],"osv":[{"id":"MGASA-2013-0265","title":"Updated ngircd package fixes CVE-2013-5580","description":"Updated ngircd package fixes security vulnerability:\n\nDenial of service bug (server crash) in ngIRCd before 20.3 which could happen\nwhen the configuration option \"NoticeAuth\" is enabled (which is NOT the\ndefault) and ngIRCd failed to send the \"notice auth\" messages to new clients\nconnecting to the server (CVE-2013-5580).\n","status":"published","published":"2013-08-30T17:33:18Z","modified":"2026-04-16T06:25:12.902152965Z","updated_at":"2026-11-02T15:49:39.121227Z"}]}}