{"id":"CVE-2011-1956","aliases":["DEBIAN-CVE-2011-1956","EUVD-2011-1950","GHSA-hqw9-f827-9xw8"],"status":"published","title":"The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows...","description":"The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via arbitrary TCP traffic.","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":"2026-11-08","score":0.05852,"percentile":0.93236,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"published":"2011-06-06T19:00:00Z","modified":"2026-10-23T17:47:27Z","exploits":[{"source":"exploitdb","id":"EDB-35873","title":"Wireshark 1.4.5 - 'bytes_repr_len()' Null Pointer Dereference Denial of Service","type":"dos","platform":"windows","date":"2011-06-17","verified":true,"url":"https://www.exploit-db.com/exploits/35873"}],"fixes":[{"ecosystem":"Debian:12","package":"wireshark","fixed_in":["1.4.6-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"wireshark","fixed_in":["1.4.6-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"wireshark","fixed_in":["1.4.6-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"wireshark","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.6-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"wireshark","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.6-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"wireshark","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.6-1"}]}]}],"products":[{"vendor":"wireshark","product":"wireshark"}],"references":[{"url":"http://www.wireshark.org/news/20110418.html","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix"]},{"url":"http://openwall.com/lists/oss-security/2011/05/31/19","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit","evidence"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14943","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred","web"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/67789","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"http://openwall.com/lists/oss-security/2011/06/01/9","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit","evidence"]},{"url":"http://secunia.com/advisories/44449","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://www.wireshark.org/docs/relnotes/wireshark-1.4.6.html","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix"]},{"url":"https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5837","tags":["x_refsource_CONFIRM","x_transferred","Exploit","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1956"},{"url":"https://github.com/advisories/GHSA-hqw9-f827-9xw8"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-1956","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2011-1956","description":"The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via arbitrary TCP traffic.","status":"published","published":"2011-06-06T19:00:00Z","modified":"2024-08-06T22:46:00.933Z","updated_at":"2026-11-02T14:35:38.321377Z"}],"euvd":[{"id":"EUVD-2011-1950","description":"The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via arbitrary TCP traffic.","status":"published","published":"2011-06-06T19:00:00Z","modified":"2024-08-06T22:46:00Z","updated_at":"2026-11-03T01:55:54.666744Z"}],"ghsa":[{"id":"GHSA-hqw9-f827-9xw8","title":"The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows...","description":"The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via arbitrary TCP traffic.","status":"published","published":"2022-05-17T01:01:48Z","modified":"2023-02-03T05:03:02Z","updated_at":"2026-11-02T14:53:17.178427Z"}],"nvd":[{"id":"CVE-2011-1956","description":"The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via arbitrary TCP traffic.","status":"published","published":"2011-06-06T19:55:02.66Z","modified":"2026-06-16T23:30:27.753Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:02:08.47516Z"}],"osv":[{"id":"CVE-2011-1956","description":"The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via arbitrary TCP traffic.","status":"published","published":"2011-06-06T19:55:02Z","modified":"2026-04-10T03:41:47.281895Z","updated_at":"2026-11-02T15:43:58.279353Z"},{"id":"DEBIAN-CVE-2011-1956","description":"The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via arbitrary TCP traffic.","status":"published","published":"2011-06-06T19:55:02.66Z","modified":"2026-10-23T17:47:27.333712633Z","updated_at":"2026-11-02T15:45:24.612044Z"}]}}