{"id":"CVE-2023-2295","aliases":["ALSA-2023:3107","ALSA-2023:3148","EUVD-2023-33801","GHSA-gcrh-c42h-m2vw","RHBA-2024:11505","RHBA-2024:11525","RHBA-2024:11565","RHSA-2023:3107","RHSA-2023:3148","RHSA-2024:10594","RLSA-2023:3107","UBUNTU-CVE-2023-2295"],"status":"published","title":"A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1...","description":"A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1 Aggressive Mode packet is received with only unacceptable crypto algorithms, and the response packet is not sent with a zero responder SPI. When a subsequent packet is received where the sender reuses the libreswan responder SPI as its own initiator SPI, the pluto daemon state machine crashes. No remote code execution is possible. This CVE exists because of a CVE-2023-30570 security regression for libreswan package in Red Hat Enterprise Linux 8.8 and Red Hat Enterprise Linux 9.2.","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":"2026-11-11","score":0.01581,"percentile":0.75842,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2023-05-16T00:00:00Z","modified":"2026-10-29T11:31:25Z","fixes":[{"ecosystem":"Red Hat:enterprise_linux:8::appstream","package":"libreswan","fixed_in":["0:4.9-3.el8_8"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","package":"libreswan-debuginfo","fixed_in":["0:4.9-3.el8_8"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","package":"libreswan-debugsource","fixed_in":["0:4.9-3.el8_8"],"sources":["osv"]},{"ecosystem":"Red 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Linux:8","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.9-3.el8_8"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.20-7build1","3.21-2","3.22-1","3.22-2","3.22-3","3.22-4","3.23-1","3.23-4"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.29-2","3.29-2build1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.32-3ubuntu3"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.11-1ubuntu1","4.12-1ubuntu1","4.14-1ubuntu1","4.14-1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.14-1ubuntu2","5.2-2.2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2-2.2ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2-2.2ubuntu1","5.2-2.2ubuntu2"]}],"products":[{"vendor":"libreswan","product":"libreswan"},{"vendor":"redhat","product":"enterprise_linux"},{"vendor":"redhat","product":"enterprise_linux_eus"},{"vendor":"redhat","product":"enterprise_linux_server_aus"},{"vendor":"redhat","product":"enterprise_linux_server_tus"},{"vendor":"the libreswan project (www.libreswan.org)","product":"libreswan"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2189777","tags":["x_transferred","Issue Tracking","report"]},{"url":"https://access.redhat.com/security/cve/CVE-2023-2295","tags":["x_transferred","Third Party Advisory","report"]},{"url":"https://access.redhat.com/errata/RHSA-2023:3107","tags":["x_transferred","Third Party Advisory","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2023:3148","tags":["x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-2295","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-gcrh-c42h-m2vw"},{"url":"https://bugzilla.redhat.com/2189777","tags":["report"]},{"url":"https://errata.almalinux.org/8/ALSA-2023-3107.html","tags":["advisory"]},{"url":"https://errata.almalinux.org/9/ALSA-2023-3148.html","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHBA-2024:11505","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhba-2024_11505.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-2295","tags":["advisory","report"]},{"url":"https://access.redhat.com/security/cve/CVE-2023-23009","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2173610","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-23009","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-23009","tags":["advisory"]},{"url":"https://github.com/libreswan/libreswan/issues/954","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2023-30570","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2187165","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-30570","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-30570","tags":["advisory"]},{"url":"https://libreswan.org/security/","tags":["article"]},{"url":"https://libreswan.org/security/CVE-2023-30570/CVE-2023-30570.txt","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2023-38710","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2225368","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-38710","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-38710","tags":["advisory"]},{"url":"https://github.com/libreswan/libreswan/releases/tag/v4.12","tags":["article"]},{"url":"https://libreswan.org/security/CVE-2023-38710/CVE-2023-38710.txt","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2023-38711","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2215952","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-38711","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-38711","tags":["advisory"]},{"url":"https://libreswan.org/security/CVE-2023-38711/CVE-2023-38711.txt","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2023-38712","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2225369","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-38712","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-38712","tags":["advisory"]},{"url":"https://libreswan.org/security/CVE-2023-38712/CVE-2023-38712.txt","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2024-2357","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2268952","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-2357","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-2357","tags":["advisory"]},{"url":"https://github.com/libreswan/libreswan/commit/cb9e1047d33fde695d63a95854c2bc2470a476c8.patch","tags":["article"]},{"url":"https://libreswan.org/security/CVE-2024-2357","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2024-3652","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2274448","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-3652","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-3652","tags":["advisory"]},{"url":"https://libreswan.org/security/CVE-2024-3652","tags":["article"]},{"url":"https://access.redhat.com/errata/RHBA-2024:11525","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhba-2024_11525.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHBA-2024:11565","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhba-2024_11565.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#important","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_3107.json","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_3148.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2024:10594","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_10594.json","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2023:3107","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-2295","tags":["report"]},{"url":"https://rhn.redhat.com/errata/RHSA-2023-3107.html","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-2295","description":"A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1 Aggressive Mode packet is received with only unacceptable crypto algorithms, and the response packet is not sent with a zero responder SPI. When a subsequent packet is received where the sender reuses the libreswan responder SPI as its own initiator SPI, the pluto daemon state machine crashes. No remote code execution is possible. This CVE exists because of a CVE-2023-30570 security regression for libreswan package in Red Hat Enterprise Linux 8.8 and Red Hat Enterprise Linux 9.2.","status":"published","published":"2023-05-17T00:00:00Z","modified":"2025-01-22T18:25:15.561Z","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-400"],"updated_at":"2026-11-02T14:35:23.645864Z"}],"euvd":[{"id":"EUVD-2023-33801","description":"A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1 Aggressive Mode packet is received with only unacceptable crypto algorithms, and the response packet is not sent with a zero responder SPI. When a subsequent packet is received where the sender reuses the libreswan responder SPI as its own initiator SPI, the pluto daemon state machine crashes. No remote code execution is possible. This CVE exists because of a CVE-2023-30570 security regression for libreswan package in Red Hat Enterprise Linux 8.8 and Red Hat Enterprise Linux 9.2.","status":"published","published":"2023-05-17T00:00:00Z","modified":"2025-01-22T18:25:15Z","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":"2026-11-03T00:04:15.37855Z"}],"ghsa":[{"id":"GHSA-gcrh-c42h-m2vw","title":"A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1...","description":"A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1 Aggressive Mode packet is received with only unacceptable crypto algorithms, and the response packet is not sent with a zero responder SPI. When a subsequent packet is received where the sender reuses the libreswan responder SPI as its own initiator SPI, the pluto daemon state machine crashes. No remote code execution is possible. This CVE exists because of a CVE-2023-30570 security regression for libreswan package in Red Hat Enterprise Linux 8.8 and Red Hat Enterprise Linux 9.2.","status":"published","published":"2023-05-18T00:30:41Z","modified":"2024-04-04T04:14:07Z","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-400"],"updated_at":"2026-11-02T14:56:21.734223Z"}],"nvd":[{"id":"CVE-2023-2295","description":"A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1 Aggressive Mode packet is received with only unacceptable crypto algorithms, and the response packet is not sent with a zero responder SPI. When a subsequent packet is received where the sender reuses the libreswan responder SPI as its own initiator SPI, the pluto daemon state machine crashes. No remote code execution is possible. This CVE exists because of a CVE-2023-30570 security regression for libreswan package in Red Hat Enterprise Linux 8.8 and Red Hat Enterprise Linux 9.2.","status":"published","published":"2023-05-17T23:15:09.25Z","modified":"2026-06-17T05:52:13.047Z","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-400"],"updated_at":"2026-11-02T14:08:02.399327Z"}],"osv":[{"id":"RHBA-2024:11505","title":"Red Hat Bug Fix Advisory: OpenShift Container Platform 4.16.28 packages and security update","status":"published","published":"2025-01-14T10:10:05Z","modified":"2026-01-29T10:57:32.51331Z","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":"2026-11-02T15:52:58.636919Z"},{"id":"RHBA-2024:11525","title":"Red Hat Bug Fix Advisory: OpenShift Container Platform 4.17.10 packages and security update","status":"published","published":"2025-01-09T10:07:44Z","modified":"2026-01-29T10:57:31.938371Z","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":"2026-11-02T15:52:58.636919Z"},{"id":"RHBA-2024:11565","title":"Red Hat Bug Fix Advisory: OpenShift Container Platform 4.15.42 packages update","status":"published","published":"2025-01-14T10:10:06Z","modified":"2026-01-29T10:57:32.750352Z","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":"2026-11-02T15:52:58.636919Z"},{"id":"RHSA-2023:3107","title":"Red Hat Security Advisory: libreswan security update","status":"published","published":"2024-09-16T11:50:45Z","modified":"2025-11-22T12:50:24Z","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":"2026-11-02T15:53:11.154197Z"},{"id":"RHSA-2023:3148","title":"Red Hat Security Advisory: libreswan security update","status":"published","published":"2024-09-16T11:50:55Z","modified":"2025-11-22T12:50:32Z","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":"2026-11-02T15:53:11.154197Z"},{"id":"RHSA-2024:10594","title":"Red Hat Security Advisory: libreswan security update","status":"published","published":"2024-12-02T10:11:25Z","modified":"2026-08-26T10:04:32Z","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":"2026-11-02T15:53:12.787505Z"},{"id":"UBUNTU-CVE-2023-2295","description":"A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1 Aggressive Mode packet is received with only unacceptable crypto algorithms, and the response packet is not sent with a zero responder SPI. When a subsequent packet is received where the sender reuses the libreswan responder SPI as its own initiator SPI, the pluto daemon state machine crashes. No remote code execution is possible. This CVE exists because of a CVE-2023-30570 security regression for libreswan package in Red Hat Enterprise Linux 8.8 and Red Hat Enterprise Linux 9.2.","status":"published","published":"2023-05-17T23:15:00Z","modified":"2026-10-17T12:56:04.212726375Z","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":"ALSA-2023:3107","title":"Important: libreswan security update","description":"Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).\n\nSecurity Fix(es):\n\n* libreswan: Regression of CVE-2023-30570 fixes in the AlmaLinux (CVE-2023-2295)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2023-05-16T00:00:00Z","modified":"2026-10-29T11:02:17.640876887Z","updated_at":"2026-11-02T15:27:52.091404Z"},{"id":"ALSA-2023:3148","title":"Important: libreswan security update","description":"Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).\n\nSecurity Fix(es):\n\n* libreswan: Regression of CVE-2023-30570 fixes in the AlmaLinux (CVE-2023-2295)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2023-05-16T00:00:00Z","modified":"2026-10-29T11:31:25.787313266Z","updated_at":"2026-11-02T15:27:52.091404Z"},{"id":"RLSA-2023:3107","title":"Important: libreswan security update","description":"Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).\n\nSecurity Fix(es):\n\n* libreswan: Regression of CVE-2023-30570 fixes in the Rocky Linux (CVE-2023-2295)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2023-05-18T19:17:56.497129Z","modified":"2026-02-04T22:15:08.317791Z","updated_at":"2026-11-02T15:53:24.63379Z"}]}}