{"id":"CVE-2023-7250","aliases":["ALSA-2024:4241","ALSA-2024:9185","AZL-36892","CLSA-2025-1755006018","DEBIAN-CVE-2023-7250","DLA-4032-1","EUVD-2023-59431","GHSA-g636-8hgg-7gx9","JLSEC-2026-760","OESA-2024-1418","RHSA-2024:4241","RHSA-2024:9185","RLSA-2024:4241","RLSA-2024:9185","UBUNTU-CVE-2023-7250","USN-7970-1"],"status":"published","title":"Iperf3: possible denial of service","description":"A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for the remainder or until the connection gets closed. 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hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"},{"vendor":"redhat","product":"enterprise_linux"},{"vendor":"redhat","product":"enterprise_linux_for_arm_64"},{"vendor":"redhat","product":"enterprise_linux_for_ibm_z_systems"},{"vendor":"redhat","product":"enterprise_linux_for_power_little_endian"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2024:4241","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://access.redhat.com/errata/RHSA-2024:9185","tags":["vendor-advisory","x_refsource_REDHAT","Third Party Advisory","advisory","web"]},{"url":"https://access.redhat.com/security/cve/CVE-2023-7250","tags":["vdb-entry","x_refsource_REDHAT","x_transferred","Third Party Advisory","report","advisory","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2244707","tags":["issue-tracking","x_refsource_REDHAT","x_transferred","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00027.html","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-7250","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-g636-8hgg-7gx9"},{"url":"https://access.redhat.com/security/cve/CVE-2024-26306","tags":["report"]},{"url":"https://bugzilla.redhat.com/2244707","tags":["report"]},{"url":"https://bugzilla.redhat.com/2270270","tags":["report"]},{"url":"https://errata.almalinux.org/8/ALSA-2024-4241.html","tags":["advisory"]},{"url":"https://errata.almalinux.org/9/ALSA-2024-9185.html","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2025-1755006018.html","tags":["advisory"]},{"url":"https://access.redhat.com/downloads/content/package-browser/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/7xxx/CVE-2023-7250.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-7250","tags":["advisory"]},{"url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2024-1418","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2270270","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_4241.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-7250","tags":["advisory","report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-26306","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-26306","tags":["advisory"]},{"url":"https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/9.5_release_notes/index","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_9185.json","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2024:4241","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2024:9185","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-7250","tags":["report"]},{"url":"https://downloads.es.net/pub/iperf/esnet-secadv-2023-0002.txt.asc","tags":["report"]},{"url":"https://github.com/esnet/iperf/commit/5e3704dd850a5df2fb2b3eafd117963d017d07b4","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-6431-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/notices/USN-7970-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2024-26306","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2024-53580","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2025-54349","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2025-54350","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-7250","title":"Iperf3: possible denial of service","description":"A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for the remainder or until the connection gets closed. This will prevent other connections to the server, leading to a denial of service.","status":"published","published":"2024-03-18T12:21:24.985Z","modified":"2026-11-05T11:38:16.904Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-183"],"updated_at":"2026-11-05T13:18:22.408512Z"}],"euvd":[{"id":"EUVD-2023-59431","description":"A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for the remainder or until the connection gets closed. This will prevent other connections to the server, leading to a denial of service.","status":"published","published":"2024-03-18T12:21:24Z","modified":"2026-11-05T11:38:16Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-05T13:14:14.11293Z"}],"ghsa":[{"id":"GHSA-g636-8hgg-7gx9","title":"A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A...","description":"A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for the remainder or until the connection gets closed. This will prevent other connections to the server, leading to a denial of service.","status":"published","published":"2024-03-18T15:30:48Z","modified":"2025-11-03T21:31:02Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-183"],"updated_at":"2026-11-02T15:04:18.722049Z"}],"nvd":[{"id":"CVE-2023-7250","description":"A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for the remainder or until the connection gets closed. This will prevent other connections to the server, leading to a denial of service.","status":"published","published":"2024-03-18T13:15:06.91Z","modified":"2026-11-05T12:17:40.417Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-183"],"updated_at":"2026-11-05T16:36:40.983114Z"}],"osv":[{"id":"CVE-2023-7250","title":"Iperf3: possible denial of service","description":"A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for the remainder or until the connection gets closed. This will prevent other connections to the server, leading to a denial of service.","status":"published","published":"2024-03-18T12:21:24.985Z","modified":"2026-11-07T02:30:57.425061626Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-183"],"updated_at":"2026-11-07T03:07:52.010191Z"},{"id":"DEBIAN-CVE-2023-7250","description":"A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for the remainder or until the connection gets closed. This will prevent other connections to the server, leading to a denial of service.","status":"published","published":"2024-03-18T13:15:06.91Z","modified":"2026-10-26T18:03:02.625812071Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:45:41.533064Z"},{"id":"JLSEC-2026-760","description":"A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for the remainder or until the connection gets closed. This will prevent other connections to the server, leading to a denial of service.","status":"published","published":"2026-07-15T15:02:37.321Z","modified":"2026-07-18T00:02:23.022122385Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:47:19.003546Z"},{"id":"OESA-2024-1418","title":"iperf3 security update","description":"Iperf is a tool for active measurements of the maximum achievable bandwidth on IP networks. It supports tuning of various parameters related to timing, protocols, and buffers.\r\n\r\nSecurity Fix(es):\r\n\r\nA flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for the remainder or until the connection gets closed. This will prevent other connections to the server, leading to a denial of service.(CVE-2023-7250)","status":"published","published":"2024-04-12T11:06:52Z","modified":"2026-08-18T01:18:21.203424352Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:52:41.095407Z"},{"id":"RHSA-2024:4241","title":"Red Hat Security Advisory: iperf3 security update","status":"published","published":"2024-09-16T19:41:03Z","modified":"2026-03-18T11:32:42.468775Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:53:14.03234Z"},{"id":"RHSA-2024:9185","title":"Red Hat Security Advisory: iperf3 security update","status":"published","published":"2024-11-12T18:01:50Z","modified":"2026-03-18T11:36:22.647533Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:53:14.610978Z"},{"id":"RLSA-2024:4241","title":"Moderate: iperf3 security update","description":"Iperf is a tool which can measure maximum TCP bandwidth and tune various parameters and UDP characteristics. 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A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for the remainder or until the connection gets closed. This will prevent other connections to the server, leading to a denial of service.","status":"published","published":"2024-03-18T13:15:00Z","modified":"2026-04-22T14:35:42.366987Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T16:54:41.555387Z"},{"id":"ALSA-2024:4241","title":"Moderate: iperf3 security update","description":"Iperf is a tool which can measure maximum TCP bandwidth and tune various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, and data-gram loss.\n\nSecurity Fix(es):\n\n* iperf3: possible denial of service (CVE-2023-7250)\n* iperf3: vulnerable to marvin attack if the authentication option is used (CVE-2024-26306)\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":"2024-07-02T00:00:00Z","modified":"2026-10-29T11:02:21.373242543Z","updated_at":"2026-11-02T15:27:52.553233Z"},{"id":"ALSA-2024:9185","title":"Moderate: iperf3 security update","description":"Iperf is a tool which can measure maximum TCP bandwidth and tune various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, and data-gram loss.  \n\nSecurity Fix(es):  \n\n  * iperf3: possible denial of service (CVE-2023-7250,ESNET-SECADV-2023-0002)\n  * iperf3: vulnerable to marvin attack if the authentication option is used (CVE-2024-26306)\n\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.  \n\nAdditional Changes:  \n\nFor detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.\n","status":"published","published":"2024-11-12T00:00:00Z","modified":"2026-10-29T11:31:09.68830464Z","updated_at":"2026-11-02T15:27:53.030731Z"},{"id":"AZL-36892","title":"CVE-2023-7250 affecting package iperf3 for versions less than 3.17-1","description":"A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for the remainder or until the connection gets closed. This will prevent other connections to the server, leading to a denial of service.","status":"published","published":"2024-03-18T13:15:06Z","modified":"2026-04-21T04:25:16.381448Z","updated_at":"2026-11-02T15:28:04.173658Z"},{"id":"CLSA-2025-1755006018","title":"iperf3: Fix of CVE-2023-7250","description":"- CVE-2023-7250: fix flaw to prevent denial of service caused by malicious or\n  malfunctioning client sending incomplete data to server","status":"published","published":"2025-08-12T13:40:22Z","modified":"2026-06-01T00:30:46.40721462Z","updated_at":"2026-11-02T15:43:42.025438Z"},{"id":"DLA-4032-1","title":"iperf3 - security update","status":"published","published":"2025-01-28T00:00:00Z","modified":"2026-03-09T01:21:07.617393Z","updated_at":"2026-11-02T15:46:12.203458Z"},{"id":"RLSA-2024:9185","title":"Moderate: iperf3 security update","description":"Iperf is a tool which can measure maximum TCP bandwidth and tune various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, and data-gram loss.\n\nSecurity Fix(es):\n\n* iperf3: possible denial of service (CVE-2023-7250,ESNET-SECADV-2023-0002)\n\n* iperf3: vulnerable to marvin attack if the authentication option is used (CVE-2024-26306)\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.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Rocky Linux 9.5 Release Notes linked from the References section.","status":"published","published":"2025-03-17T20:16:49.937392Z","modified":"2026-02-05T05:30:11.747368Z","updated_at":"2026-11-02T15:53:24.923365Z"},{"id":"USN-7970-1","title":"iperf3 vulnerabilities","description":"Jorge Sancho Larraz discovered that iperf3 did not properly manage certain\ninputs, which could cause the server process to stop responding, waiting\nfor input on the control connection. A remote attacker could possibly use\nthis issue to cause a denial of service. This issue was only addressed in\nUbuntu 22.04 LTS. (CVE-2023-7250)\n\nIt was discovered that iperf3 had a timing side-channel when performing RSA\ndecryption. An attacker could possibly use this issue to recover sensitive\ninformation. This issue was only addressed in Ubuntu 20.04 LTS and Ubuntu\n22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-26306)\n\nIt was discovered that iperf3 incorrectly handled certain inputs. An\nattacker could possibly use this issue to cause a denial of service. This\nissue was only addressed in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu\n24.04 LTS. (CVE-2024-53580)\n\nHan Lee discovered that iperf3 had an off-by-one heap overflow. An attacker\ncould possibly use this issue to crash the program or execute arbitrary\ncode. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS,\nUbuntu 24.04 LTS and Ubuntu 25.10. (CVE-2025-54349)\n\nHan Lee discovered that iperf3 did not properly manage certain inputs. An\nattacker could possibly use this issue to cause a denial of service.\n(CVE-2025-54350)","status":"published","published":"2026-01-21T05:29:16Z","modified":"2026-04-27T18:47:21.048580256Z","updated_at":"2026-11-02T16:58:22.951676Z"}]}}