{"id":"CVE-2013-0238","aliases":["DEBIAN-CVE-2013-0238","DSA-2618-1","EUVD-2013-0271","GHSA-9gxx-9pxw-xjp7"],"status":"published","title":"The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly...","description":"The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks, which allows remote attackers to cause a denial of service (crash) via a mask that causes a negative number to be parsed.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.09962,"percentile":0.95629,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-20"],"published":"2013-02-07T00:00:00Z","modified":"2026-09-01T20:03:11Z","exploits":[{"source":"exploitdb","id":"EDB-24951","title":"ircd-hybrid 8.0.5 - Denial of Service","type":"dos","platform":"linux","date":"2013-04-12","url":"https://www.exploit-db.com/exploits/24951"}],"fixes":[{"ecosystem":"Debian:12","package":"ircd-hybrid","fixed_in":["1:7.2.2.dfsg.2-10"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"ircd-hybrid","fixed_in":["1:7.2.2.dfsg.2-10"],"sources":["osv"]},{"ecosystem":"Debian:6.0","package":"ircd-hybrid","fixed_in":["1:7.2.2.dfsg.2-6.2+squeeze1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"ircd-hybrid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.2.2.dfsg.2-10"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"ircd-hybrid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.2.2.dfsg.2-10"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"ircd-hybrid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.2.2.dfsg.2-6.2+squeeze1"}]}],"versions":["1:7.2.2.dfsg.2-6.2"]}],"products":[{"vendor":"ircd-hybrid","product":"ircd-hybrid"}],"references":[{"url":"http://www.debian.org/security/2013/dsa-2618","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"http://secunia.com/advisories/52106","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2013/01/29/8","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2013:093","tags":["vendor-advisory","x_refsource_MANDRIVA","x_transferred","advisory"]},{"url":"http://www.securityfocus.com/bid/57610","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://svn.ircd-hybrid.org:8000/viewcvs.cgi/ircd-hybrid/trunk/src/hostmask.c?r1=1786\u0026r2=1785\u0026pathrev=1786","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://secunia.com/advisories/51948","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/81695","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0055","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://osvdb.org/89623","tags":["vdb-entry","x_refsource_OSVDB","x_transferred","web"]},{"url":"http://www.exploit-db.com/exploits/24951","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","web"]},{"url":"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=699267","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-0238"},{"url":"https://github.com/advisories/GHSA-9gxx-9pxw-xjp7"},{"url":"https://security-tracker.debian.org/tracker/CVE-2013-0238","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2013-0238","description":"The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks, which allows remote attackers to cause a denial of service (crash) via a mask that causes a negative number to be parsed.","status":"published","published":"2013-02-13T01:00:00Z","modified":"2024-08-06T14:18:09.55Z","updated_at":"2026-11-02T14:34:59.222149Z"}],"euvd":[{"id":"EUVD-2013-0271","description":"The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks, which allows remote attackers to cause a denial of service (crash) via a mask that causes a negative number to be parsed.","status":"published","published":"2013-02-13T01:00:00Z","modified":"2024-08-06T14:18:09Z","updated_at":"2026-11-03T01:56:46.251982Z"}],"ghsa":[{"id":"GHSA-9gxx-9pxw-xjp7","title":"The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly...","description":"The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks, which allows remote attackers to cause a denial of service (crash) via a mask that causes a negative number to be parsed.","status":"published","published":"2022-05-05T02:48:38Z","modified":"2023-02-01T05:01:57Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:49:49.102034Z"}],"nvd":[{"id":"CVE-2013-0238","description":"The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks, which allows remote attackers to cause a denial of service (crash) via a mask that causes a negative number to be parsed.","status":"published","published":"2013-02-13T01:55:04.09Z","modified":"2026-06-16T23:49:01.84Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:21.222658Z"}],"osv":[{"id":"CVE-2013-0238","description":"The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks, which allows remote attackers to cause a denial of service (crash) via a mask that causes a negative number to be parsed.","status":"published","published":"2013-02-13T01:55:04Z","modified":"2026-04-10T03:42:37.624185Z","updated_at":"2026-11-02T15:43:58.802805Z"},{"id":"DEBIAN-CVE-2013-0238","description":"The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks, which allows remote attackers to cause a denial of service (crash) via a mask that causes a negative number to be parsed.","status":"published","published":"2013-02-13T01:55:04.09Z","modified":"2026-09-01T20:03:11.311705935Z","updated_at":"2026-11-02T15:45:25.218101Z"},{"id":"DSA-2618-1","title":"ircd-hybrid - denial of service","status":"published","published":"2013-02-07T00:00:00Z","modified":"2026-03-09T01:21:33.528331Z","updated_at":"2026-11-02T15:46:15.489951Z"}]}}