{"id":"CVE-2007-4924","aliases":["EUVD-2007-4905","GHSA-55xh-gq2p-rgv2","RHSA-2007:0957"],"status":"published","title":"The Open Phone Abstraction Library (opal), as used by (1) Ekiga before 2.0.10 and (2) OpenH323...","description":"The Open Phone Abstraction Library (opal), as used by (1) Ekiga before 2.0.10 and (2) OpenH323 before 2.2.4, allows remote attackers to cause a denial of service (crash) via an invalid Content-Length header field in Session Initiation Protocol (SIP) packets, which causes a \\0 byte to be written to an \"attacker-controlled address.\"","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":"2026-11-07","score":0.1068,"percentile":0.95836,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-20"],"published":"2007-10-08T21:00:00Z","modified":"2026-06-26T12:17:45Z","exploits":[{"source":"exploitdb","id":"EDB-9240","title":"OpenH323 Opal SIP Protocol - Remote Denial of Service","type":"dos","platform":"windows","date":"2009-07-24","verified":true,"url":"https://www.exploit-db.com/exploits/9240"}],"fixes":[{"ecosystem":"Red Hat:enterprise_linux:5::client_workstation","package":"opal","fixed_in":["0:2.2.2-1.1.0.1"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:5::client_workstation","package":"opal-debuginfo","fixed_in":["0:2.2.2-1.1.0.1"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:5::client_workstation","package":"opal-devel","fixed_in":["0:2.2.2-1.1.0.1"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:5::client","package":"opal","fixed_in":["0:2.2.2-1.1.0.1"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:5::client","package":"opal-debuginfo","fixed_in":["0:2.2.2-1.1.0.1"],"sources":["osv"]},{"ecosystem":"Red Hat:rhel_productivity:5","package":"opal","fixed_in":["0:2.2.2-1.1.0.1"],"sources":["osv"]},{"ecosystem":"Red Hat:rhel_productivity:5","package":"opal-debuginfo","fixed_in":["0:2.2.2-1.1.0.1"],"sources":["osv"]},{"ecosystem":"Red Hat:rhel_productivity:5","package":"opal-devel","fixed_in":["0:2.2.2-1.1.0.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client_workstation","package":"opal","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.2.2-1.1.0.1"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client_workstation","package":"opal-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.2.2-1.1.0.1"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client_workstation","package":"opal-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.2.2-1.1.0.1"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client","package":"opal","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.2.2-1.1.0.1"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::client","package":"opal-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.2.2-1.1.0.1"}]}]},{"source":"osv","ecosystem":"Red Hat:rhel_productivity:5","package":"opal","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.2.2-1.1.0.1"}]}]},{"source":"osv","ecosystem":"Red Hat:rhel_productivity:5","package":"opal-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.2.2-1.1.0.1"}]}]},{"source":"osv","ecosystem":"Red Hat:rhel_productivity:5","package":"opal-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.2.2-1.1.0.1"}]}]}],"products":[{"vendor":"ekiga","product":"ekiga"},{"vendor":"openh323_project","product":"openh323"}],"references":[{"url":"http://secunia.com/advisories/27118","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Patch","Vendor Advisory"]},{"url":"http://secunia.com/advisories/27271","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"http://www.securitytracker.com/id?1018776","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.securityfocus.com/bid/25955","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://secunia.com/advisories/27129","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.mandriva.com/security/advisories?name=MDKSA-2007:205","tags":["vendor-advisory","x_refsource_MANDRIVA","x_transferred"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=296371","tags":["x_refsource_CONFIRM","x_transferred","report"]},{"url":"http://secunia.com/advisories/28380","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"http://osvdb.org/41637","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.redhat.com/support/errata/RHSA-2007-0957.html","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","Patch"]},{"url":"http://mail.gnome.org/archives/ekiga-list/2007-September/msg00103.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Patch"]},{"url":"http://www.ubuntu.com/usn/usn-562-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11398","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://www.s21sec.com/avisos/s21sec-037-en.txt","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/482120/30/4500/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2007-10/msg00006.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2007/3413","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2007/3414","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"https://www.exploit-db.com/exploits/9240","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"http://secunia.com/advisories/27524","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"http://openh323.cvs.sourceforge.net/openh323/opal/src/sip/sippdu.cxx?r1=2.83.2.19\u0026r2=2.83.2.20","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://secunia.com/advisories/27128","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2007-4924","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-55xh-gq2p-rgv2"},{"url":"https://access.redhat.com/errata/RHSA-2007:0957","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2007/rhsa-2007_0957.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2007-4924","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2007-4924","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2007-4924","description":"The Open Phone Abstraction Library (opal), as used by (1) Ekiga before 2.0.10 and (2) OpenH323 before 2.2.4, allows remote attackers to cause a denial of service (crash) via an invalid Content-Length header field in Session Initiation Protocol (SIP) packets, which causes a \\0 byte to be written to an \"attacker-controlled address.\"","status":"published","published":"2007-10-08T21:00:00Z","modified":"2024-08-07T15:08:34.248Z","updated_at":"2026-11-02T13:33:19.093583Z"}],"euvd":[{"id":"EUVD-2007-4905","description":"The Open Phone Abstraction Library (opal), as used by (1) Ekiga before 2.0.10 and (2) OpenH323 before 2.2.4, allows remote attackers to cause a denial of service (crash) via an invalid Content-Length header field in Session Initiation Protocol (SIP) packets, which causes a \\0 byte to be written to an \"attacker-controlled address.\"","status":"published","published":"2007-10-08T21:00:00Z","modified":"2024-08-07T15:08:34Z","updated_at":"2026-11-03T01:16:19.667559Z"}],"ghsa":[{"id":"GHSA-55xh-gq2p-rgv2","title":"The Open Phone Abstraction Library (opal), as used by (1) Ekiga before 2.0.10 and (2) OpenH323...","description":"The Open Phone Abstraction Library (opal), as used by (1) Ekiga before 2.0.10 and (2) OpenH323 before 2.2.4, allows remote attackers to cause a denial of service (crash) via an invalid Content-Length header field in Session Initiation Protocol (SIP) packets, which causes a \\0 byte to be written to an \"attacker-controlled address.\"","status":"published","published":"2022-05-01T18:28:12Z","modified":"2023-01-31T05:04:51Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:48:44.881102Z"}],"nvd":[{"id":"CVE-2007-4924","description":"The Open Phone Abstraction Library (opal), as used by (1) Ekiga before 2.0.10 and (2) OpenH323 before 2.2.4, allows remote attackers to cause a denial of service (crash) via an invalid Content-Length header field in Session Initiation Protocol (SIP) packets, which causes a \\0 byte to be written to an \"attacker-controlled address.\"","status":"published","published":"2007-10-08T21:17:00Z","modified":"2026-06-16T22:45:01.123Z","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":"2026-11-02T14:01:21.141213Z"}],"osv":[{"id":"RHSA-2007:0957","title":"Red Hat Security Advisory: opal security update","status":"published","published":"2024-09-15T16:57:33Z","modified":"2026-06-26T12:17:45.179309373Z","updated_at":"2026-11-02T15:52:59.70892Z"}]}}