{"id":"CVE-2023-27786","aliases":["DEBIAN-CVE-2023-27786","EUVD-2023-31522","GHSA-qwhm-4rh7-6qr6","MGASA-2023-0188","UBUNTU-CVE-2023-27786","USN-7231-1","openSUSE-SU-2023:0267-1","openSUSE-SU-2024:13108-1"],"status":"published","title":"An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the...","description":"An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01468,"percentile":0.73911,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2023-03-16T00:00:00Z","modified":"2026-10-28T02:30:42Z","fixes":[{"ecosystem":"Debian:13","package":"tcpreplay","fixed_in":["4.4.4-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"tcpreplay","fixed_in":["4.4.4-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"tcpreplay","fixed_in":["3.4.4-2+deb8u1ubuntu0.1~esm3"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"tcpreplay","fixed_in":["4.2.6-1ubuntu0.1~esm5"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"tcpreplay","fixed_in":["4.3.2-1ubuntu0.1~esm3"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:22.04:LTS","package":"tcpreplay","fixed_in":["4.3.4-1ubuntu0.1~esm2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.3-1","4.4.4-1","4.5.1-1","4.5.2-1","4.5.3-1","4.5.4-1"]},{"source":"osv","ecosystem":"Debian:13","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.4-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.4-1"}]}]},{"source":"osv","ecosystem":"Mageia:8","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.2-1.1.mga8"}]}],"bundled":7},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.4-2+deb8u1ubuntu0.1~esm3"}]}],"versions":["3.4.4-2","3.4.4-2+deb8u1build0.16.04.1","3.4.4-2+deb8u1ubuntu0.1~esm1","3.4.4-2+deb8u1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.6-1ubuntu0.1~esm5"}]}],"versions":["4.2.6-1","4.2.6-1ubuntu0.1~esm1","4.2.6-1ubuntu0.1~esm2","4.2.6-1ubuntu0.1~esm3","4.2.6-1ubuntu0.1~esm4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.2-1ubuntu0.1~esm3"}]}],"versions":["4.3.2-1build1","4.3.2-1ubuntu0.1~esm1","4.3.2-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.4-1ubuntu0.1~esm2"}]}],"versions":["4.3.3-2","4.3.4-1","4.3.4-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.4-2+deb8u1ubuntu0.1~esm3"}]}],"versions":["3.4.4-2","3.4.4-2+deb8u1build0.16.04.1","3.4.4-2+deb8u1ubuntu0.1~esm1","3.4.4-2+deb8u1ubuntu0.1~esm2"],"bundled":9},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.6-1ubuntu0.1~esm5"}]}],"versions":["4.2.6-1","4.2.6-1ubuntu0.1~esm1","4.2.6-1ubuntu0.1~esm2","4.2.6-1ubuntu0.1~esm3","4.2.6-1ubuntu0.1~esm4"],"bundled":9},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.2-1ubuntu0.1~esm3"}]}],"versions":["4.3.2-1build1","4.3.2-1ubuntu0.1~esm1","4.3.2-1ubuntu0.1~esm2"],"bundled":9},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.4-1ubuntu0.1~esm2"}]}],"versions":["4.3.3-2","4.3.4-1","4.3.4-1ubuntu0.1~esm1"],"bundled":9},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.4-1ubuntu0.1~esm1"}]}],"versions":["4.4.3-1","4.4.4-1","4.4.4-1build1","4.4.4-1build2"],"bundled":9},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP4","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.4-bp155.2.3.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP5","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.4-bp155.2.3.1"}]}],"bundled":2},{"source":"osv","ecosystem":"openSUSE:Leap 15.4","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.4-bp155.2.3.1"}]}],"bundled":2},{"source":"osv","ecosystem":"openSUSE:Leap 15.5","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.4-bp155.2.3.1"}]}],"bundled":2},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"tcpreplay","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.4-1.1"}]}],"bundled":2}],"products":[{"vendor":"broadcom","product":"tcpreplay"}],"references":[{"url":"https://github.com/appneta/tcpreplay/issues/782","tags":["x_transferred","Exploit","Issue Tracking","Patch","report"]},{"url":"https://github.com/appneta/tcpreplay/pull/783","tags":["x_transferred","Issue Tracking","Patch","fix","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UE3J4LKYFNKPKNSLDQK4JG36THQMQH3V/","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R3ER3YTFR3XIDMYEB7LMFWFTPVQALBHC/","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UK2BRH3W3ECF5FDXP6QM3ZEDTHIOE4M5/","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-27786","tags":["advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R3ER3YTFR3XIDMYEB7LMFWFTPVQALBHC"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UE3J4LKYFNKPKNSLDQK4JG36THQMQH3V"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UK2BRH3W3ECF5FDXP6QM3ZEDTHIOE4M5"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R3ER3YTFR3XIDMYEB7LMFWFTPVQALBHC"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UE3J4LKYFNKPKNSLDQK4JG36THQMQH3V"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UK2BRH3W3ECF5FDXP6QM3ZEDTHIOE4M5"},{"url":"https://github.com/advisories/GHSA-qwhm-4rh7-6qr6"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/27xxx/CVE-2023-27786.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-27786","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2023-0188.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=31926","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/UE3J4LKYFNKPKNSLDQK4JG36THQMQH3V/","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2023-27786","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-27786","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-7231-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-4256","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-27783","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-27784","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-27785","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-27787","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-27788","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-27789","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-43279","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/WHVN36IVFXJ2224ASIQPWW2NGLN7SXGF/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1209413","tags":["report"]},{"url":"https://bugzilla.suse.com/1209416","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2023-27783","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-27786","tags":["web"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-27786","description":"An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.","status":"published","published":"2023-03-16T00:00:00Z","modified":"2025-02-26T16:06:54.486Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:35:26.63732Z"}],"euvd":[{"id":"EUVD-2023-31522","description":"An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.","status":"published","published":"2023-03-16T00:00:00Z","modified":"2025-02-26T16:06:54Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:53:23.257772Z"}],"ghsa":[{"id":"GHSA-qwhm-4rh7-6qr6","title":"An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the...","description":"An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.","status":"published","published":"2023-03-16T15:30:19Z","modified":"2025-02-26T18:31:40Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:00:03.228993Z"}],"nvd":[{"id":"CVE-2023-27786","description":"An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.","status":"published","published":"2023-03-16T15:15:10.877Z","modified":"2026-06-17T05:45:51.62Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:07:49.031498Z"}],"osv":[{"id":"CVE-2023-27786","description":"An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.","status":"published","published":"2023-03-16T00:00:00Z","modified":"2026-10-28T02:30:42.302409753Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:31.135751Z"},{"id":"DEBIAN-CVE-2023-27786","description":"An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.","status":"published","published":"2023-03-16T15:15:10.877Z","modified":"2026-10-26T18:01:46.177168746Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:39.679062Z"},{"id":"UBUNTU-CVE-2023-27786","description":"An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.","status":"published","published":"2023-03-16T15:15:00Z","modified":"2026-02-04T04:39:43.171944Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:20.198616Z"},{"id":"MGASA-2023-0188","title":"Updated tcpreplay packages fix security vulnerability","description":"An issue found in TCPreplay tcprewrite v.4.4.3 allows a remote attacker to\ncause a denial of service via the tcpedit_dlt_cleanup function at\nplugins/dlt_plugins.c. (CVE-2023-27783)\n\nAn issue found in TCPReplay v.4.4.3 allows a remote attacker to cause a\ndenial of service via the read_hexstring function at the utils.c:309\nendpoint. (CVE-2023-27784)\n\nAn issue found in TCPreplay TCPprep v.4.4.3 allows a remote attacker to\ncause a denial of service via the parse endpoints function.\n(CVE-2023-27785)\n\nAn issue found in TCPprep v.4.4.3 allows a remote attacker to cause a\ndenial of service via the macinstring function. (CVE-2023-27786)\n\nAn issue found in TCPprep v.4.4.3 allows a remote attacker to cause a\ndenial of service via the parse_list function at the list.c:81 endpoint.\n(CVE-2023-27787)\n\nAn issue found in TCPrewrite v.4.4.3 allows a remote attacker to cause a\ndenial of service via the ports2PORT function at the portmap.c:69\nendpoint. (CVE-2023-27788)\n\nAn issue found in TCPprep v.4.4.3 allows a remote attacker to cause a\ndenial of service via the cidr2cidr function at the cidr.c:178 endpoint.\n(CVE-2023-27789)\n","status":"published","published":"2023-05-31T06:41:32Z","modified":"2026-04-16T04:43:35.15308855Z","updated_at":"2026-11-02T15:49:42.263076Z"},{"id":"openSUSE-SU-2023:0267-1","title":"Security update for tcpreplay","description":"This update for tcpreplay fixes the following issues:\n\nUpdate to 4.4.4:\n\n* overflow check fix for parse_mpls.\n* tcpreplay-edit: prevent L2 flooding of ipv6 unicast packets.\n* CVE-2023-27786: bugs caused by strtok_r. (boo#1209416)\n* CVE-2023-27783 reachable assert in tcpedit_dlt_cleanup (boo#1209413)\n* reachable assert in fast_edit_packet.\n","status":"published","published":"2023-09-25T22:01:50Z","modified":"2026-02-04T02:55:20.69023Z","updated_at":"2026-11-02T16:58:32.653274Z"},{"id":"openSUSE-SU-2024:13108-1","title":"tcpreplay-4.4.4-1.1 on GA media","description":"These are all security issues fixed in the tcpreplay-4.4.4-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:58:25.571907Z","updated_at":"2026-11-02T16:58:36.025801Z"},{"id":"USN-7231-1","title":"tcpreplay vulnerabilities","description":"It was discovered that Tcpreplay incorrectly handled memory when using the\ntcprewrite utility. A remote attacker could possibly use this issue to\ncause Tcpreplay to crash, resulting in a denial of service.\n(CVE-2023-27783)\n\nIt was discovered that Tcpreplay incorrectly validated external input. A\nremote attacker could possibly use this issue to cause Tcpreplay to crash,\nresulting in a denial of service. (CVE-2023-27784, CVE-2023-27785,\nCVE-2023-27786, CVE-2023-27787, CVE-2023-27788, CVE-2023-27789)\n\nIt was discovered that Tcpreplay incorrectly handled memory when using the\ntcprewrite utility. An attacker could possibly use this issue to cause\nTcpreplay to crash, resulting in a denial of service. (CVE-2023-4256,\nCVE-2023-43279)\n","status":"published","published":"2025-01-28T14:49:27Z","modified":"2026-06-25T13:32:30.638934955Z","updated_at":"2026-11-02T16:58:18.876384Z"}]}}