{
  "threat_severity" : "Moderate",
  "public_date" : "2025-10-06T00:00:00Z",
  "bugzilla" : {
    "description" : "openssh: OpenSSH: Control characters in usernames can lead to code execution via ProxyCommand",
    "id" : "2401960",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2401960"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
    "status" : "verified"
  },
  "cwe" : "CWE-159",
  "details" : [ "ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to code execution when a ProxyCommand is used. The untrusted sources are the command line and %-sequence expansion of a configuration file. (A configuration file that provides a complete literal username is not categorized as an untrusted source.)", "A flaw was found in OpenSSH where control characters in usernames were not properly validated when sourced from untrusted inputs like the command line or configuration expansion. If a ProxyCommand is used, these control characters could modify command behavior, potentially leading to code execution." ],
  "statement" : "The impact is MODERATE because it is a critical component used across many Red Hat products.\nThe issue occurs only when a ProxyCommand is configured and the SSH client handles a username containing control characters from an untrusted source, such as script-generated input or expanded configuration values.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2025-12-17T00:00:00Z",
    "advisory" : "RHSA-2025:23479",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.1",
    "package" : "openssh-0:9.9p1-12.el10_1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10.0 Extended Update Support",
    "release_date" : "2026-02-02T00:00:00Z",
    "advisory" : "RHSA-2026:1678",
    "cpe" : "cpe:/o:redhat:enterprise_linux_eus:10.0",
    "package" : "openssh-0:9.9p1-7.el10_0.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2025-12-17T00:00:00Z",
    "advisory" : "RHSA-2025:23481",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "openssh-0:8.0p1-27.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2025-12-17T00:00:00Z",
    "advisory" : "RHSA-2025:23481",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "openssh-0:8.0p1-27.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2025-12-17T00:00:00Z",
    "advisory" : "RHSA-2025:23480",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "openssh-0:8.7p1-47.el9_7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2025-12-17T00:00:00Z",
    "advisory" : "RHSA-2025:23480",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "openssh-0:8.7p1-47.el9_7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions",
    "release_date" : "2026-02-03T00:00:00Z",
    "advisory" : "RHSA-2026:1790",
    "cpe" : "cpe:/a:redhat:rhel_e4s:9.0",
    "package" : "openssh-0:8.7p1-13.el9_0.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
    "release_date" : "2026-02-03T00:00:00Z",
    "advisory" : "RHSA-2026:1815",
    "cpe" : "cpe:/a:redhat:rhel_e4s:9.2",
    "package" : "openssh-0:8.7p1-30.el9_2.9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.4 Extended Update Support",
    "release_date" : "2026-01-22T00:00:00Z",
    "advisory" : "RHSA-2026:0976",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.4",
    "package" : "openssh-0:8.7p1-38.el9_4.6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.6 Extended Update Support",
    "release_date" : "2026-01-15T00:00:00Z",
    "advisory" : "RHSA-2026:0693",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.6",
    "package" : "openssh-0:8.7p1-45.el9_6.1"
  }, {
    "product_name" : "Red Hat Ceph Storage 7",
    "release_date" : "2026-02-03T00:00:00Z",
    "advisory" : "RHSA-2026:1858",
    "cpe" : "cpe:/a:redhat:ceph_storage:7::el9",
    "package" : "rhceph/rhceph-7-rhel9:sha256:72a6d9deb9325e43639230b2681640b15bab946025810258796f95315febb7f4"
  }, {
    "product_name" : "Red Hat Ceph Storage 8",
    "release_date" : "2026-02-02T00:00:00Z",
    "advisory" : "RHSA-2026:1652",
    "cpe" : "cpe:/a:redhat:ceph_storage:8::el9",
    "package" : "rhceph/rhceph-8-rhel9:sha256:09aaeba975aa74bdf95d63e5619c0cabb1cd9e1410aa34e7f8ecf24a5e291d1a"
  }, {
    "product_name" : "Red Hat Discovery 2",
    "release_date" : "2026-01-08T00:00:00Z",
    "advisory" : "RHSA-2026:0414",
    "cpe" : "cpe:/a:redhat:discovery:2::el9",
    "package" : "discovery/discovery-server-rhel9:sha256:75723049a444b5136e2d40920e2852f0840fecf60832a8bbb06e488fc9bba543"
  }, {
    "product_name" : "Red Hat Update Infrastructure 5",
    "release_date" : "2026-01-15T00:00:00Z",
    "advisory" : "RHSA-2026:0685",
    "cpe" : "cpe:/a:redhat:rhui:5::el9",
    "package" : "rhui5/installer-rhel9:sha256:e1d64fbd0e4b90259d9fbb94736ed74c7c384d13067c6bbbb107c664683cb1a9"
  }, {
    "product_name" : "Red Hat Update Infrastructure 5",
    "release_date" : "2026-01-15T00:00:00Z",
    "advisory" : "RHSA-2026:0685",
    "cpe" : "cpe:/a:redhat:rhui:5::el9",
    "package" : "rhui5/rhua-rhel9:sha256:4642951a6a57511f8b481a6481fcd417fc7f3de86511cdab28b9b89639c2bdb2"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "openssh",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Fix deferred",
    "package_name" : "openssh",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Fix deferred",
    "package_name" : "rhcos",
    "cpe" : "cpe:/a:redhat:openshift:4"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2025-61984\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-61984\nhttps://marc.info/?l=openssh-unix-dev&m=175974522032149&w=2\nhttps://www.openssh.com/releasenotes.html#10.1p1\nhttps://www.openwall.com/lists/oss-security/2025/10/06/1" ],
  "name" : "CVE-2025-61984",
  "csaw" : false
}