{"dataType":"CVE_RECORD","cveMetadata":{"cveId":"CVE-2024-6409","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","state":"PUBLISHED","assignerShortName":"redhat","dateReserved":"2024-06-28T18:10:24.954Z","datePublished":"2024-07-08T17:57:10.517Z","dateUpdated":"2025-11-11T16:04:08.572Z"},"containers":{"cna":{"title":"Openssh: possible remote code execution due to a race condition in signal handling affecting red hat enterprise linux 9","metrics":[{"other":{"content":{"value":"Moderate","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","version":"3.1"},"format":"CVSS"}],"descriptions":[{"lang":"en","value":"A race condition vulnerability was discovered in how signals are handled by OpenSSH's server (sshd). If a remote attacker does not authenticate within a set time period, then sshd's SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog(). As a consequence of a successful attack, in the worst case scenario, an attacker may be able to perform a remote code execution (RCE) as an unprivileged user running the sshd server."}],"affected":[{"repo":"https://anongit.mindrot.org/openssh.git","packageName":"OpenSSH","collectionURL":"https://www.openssh.com/","defaultStatus":"unaffected"},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openssh","defaultStatus":"affected","versions":[{"version":"0:8.7p1-38.el9_4.4","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/o:redhat:enterprise_linux:9::baseos","cpe:/a:redhat:enterprise_linux:9::appstream"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openssh","defaultStatus":"affected","versions":[{"version":"0:8.7p1-38.el9_4.4","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/o:redhat:enterprise_linux:9::baseos","cpe:/a:redhat:enterprise_linux:9::appstream"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openssh","defaultStatus":"affected","versions":[{"version":"0:8.7p1-12.el9_0.3","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_e4s:9.0::appstream","cpe:/o:redhat:rhel_e4s:9.0::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.2 Extended Update Support","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openssh","defaultStatus":"affected","versions":[{"version":"0:8.7p1-30.el9_2.7","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/o:redhat:rhel_eus:9.2::baseos","cpe:/a:redhat:rhel_eus:9.2::appstream"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.13","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhcos","defaultStatus":"affected","versions":[{"version":"413.92.202408122222-0","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift:4.13::el9","cpe:/a:redhat:openshift:4.13::el8"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.14","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhcos","defaultStatus":"affected","versions":[{"version":"414.92.202407300859-0","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift:4.14::el8","cpe:/a:redhat:openshift:4.14::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.15","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhcos","defaultStatus":"affected","versions":[{"version":"415.92.202407301159-0","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift:4.15::el9","cpe:/a:redhat:openshift:4.15::el8"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.16","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhcos","defaultStatus":"affected","versions":[{"version":"416.94.202407171205-0","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift:4.16::el9"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openssh","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openssh","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openssh","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openssh","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:8"]}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2024:4457","name":"RHSA-2024:4457","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2024:4613","name":"RHSA-2024:4613","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2024:4716","name":"RHSA-2024:4716","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2024:4910","name":"RHSA-2024:4910","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2024:4955","name":"RHSA-2024:4955","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2024:4960","name":"RHSA-2024:4960","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2024:5444","name":"RHSA-2024:5444","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2024-6409","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2295085","name":"RHBZ#2295085","tags":["issue-tracking","x_refsource_REDHAT"]}],"datePublic":"2024-07-08T17:45:07.000Z","problemTypes":[{"descriptions":[{"cweId":"CWE-364","description":"Signal Handler Race Condition","lang":"en","type":"CWE"}]}],"x_redhatCweChain":"CWE-364: Signal Handler Race Condition","workarounds":[{"lang":"en","value":"The process is identical to CVE-2024-6387, by disabling LoginGraceTime. See that CVE page for additional details."}],"timeline":[{"lang":"en","time":"2024-07-01T00:00:00.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2024-07-08T17:45:07.000Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank Solar Designer (CIQ/Rocky Linux) for reporting this issue."}],"providerMetadata":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2025-11-11T16:04:08.572Z"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-07-11T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2024-6409"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-07-12T03:55:30.136Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-01T21:41:03.399Z"},"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2024/07/08/2","tags":["x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2024/07/09/2","tags":["x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2024/07/09/5","tags":["x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2024/07/10/1","tags":["x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2024/07/10/2","tags":["x_transferred"]},{"url":"https://access.redhat.com/errata/RHSA-2024:4457","name":"RHSA-2024:4457","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"]},{"url":"https://access.redhat.com/errata/RHSA-2024:4613","name":"RHSA-2024:4613","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"]},{"url":"https://access.redhat.com/errata/RHSA-2024:4716","name":"RHSA-2024:4716","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"]},{"url":"https://access.redhat.com/security/cve/CVE-2024-6409","tags":["vdb-entry","x_refsource_REDHAT","x_transferred"]},{"url":"https://almalinux.org/blog/2024-07-09-cve-2024-6409/","tags":["x_transferred"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2295085","name":"RHBZ#2295085","tags":["issue-tracking","x_refsource_REDHAT","x_transferred"]},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1227217","tags":["x_transferred"]},{"url":"https://explore.alas.aws.amazon.com/CVE-2024-6409.html","tags":["x_transferred"]},{"url":"https://github.com/openela-main/openssh/commit/c00da7741d42029e49047dd89e266d91dcfbffa0","tags":["x_transferred"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2024-6409","tags":["x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20240712-0003/","tags":["x_transferred"]},{"url":"https://sig-security.rocky.page/issues/CVE-2024-6409/","tags":["x_transferred"]},{"url":"https://ubuntu.com/security/CVE-2024-6409","tags":["x_transferred"]},{"url":"https://www.suse.com/security/cve/CVE-2024-6409.html","tags":["x_transferred"]}]}]},"dataVersion":"5.2"}