CVE record · CVE-2024-6387

Openssh: regresshion - race condition in ssh allows rce/dos

CVSS 8.1 HighCriticalEPSS 1.00 · 99th percentile

Critical, because:

CVSS score 8.1 (7.0 or more) and EPSS 1.00 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

Published by the CVE Program (CNA: redhat) at 1 Jul 2024, 12:37 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Not given	Not given Package name: OpenSSH https://www.openssh.com/	affected 8.5p1 to 9.7p1, inclusive custom Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 9 Package name: openssh https://access.redhat.com/downloads/content/package-browser/	unaffected 0:8.7p1-38.el9_4.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: openssh https://access.redhat.com/downloads/content/package-browser/	unaffected 0:8.7p1-38.el9_4.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Package name: openssh https://access.redhat.com/downloads/content/package-browser/	unaffected 0:8.7p1-12.el9_0.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support Package name: openssh https://access.redhat.com/downloads/content/package-browser/	unaffected 0:8.7p1-30.el9_2.4 to before * rpm Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4.13 Package name: openshift/ose-rhel-coreos-9 https://catalog.redhat.com/software/containers/	unaffected 413.92.202407091321-0 to before * rpm Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4.14 Package name: openshift/ose-rhel-coreos-9 https://catalog.redhat.com/software/containers/	unaffected 414.92.202407091253-0 to before * rpm Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4.15 Package name: openshift/ose-rhel-coreos-9 https://catalog.redhat.com/software/containers/	unaffected 415.92.202407091355-0 to before * rpm Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4.16 Package name: openshift/ose-rhel-coreos-9 https://catalog.redhat.com/software/containers/	unaffected 416.94.202407081958-0 to before * rpm Other versions: affected
Red Hat	Red Hat Ceph Storage 5 Package name: openssh https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Ceph Storage 6 Package name: openssh https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Ceph Storage 7 Package name: openssh https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 10 Package name: openssh https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 6 Package name: openssh https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 7 Package name: openssh https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8 Package name: openssh https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat OpenShift Container Platform 4 Package name: openshift/ose-rhel-coreos-8 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected

Identifiers: CVE-2024-6387
CNA: redhat
Weakness (CWE): CWE-364
Tags: Red Hat Enterprise Linux 9
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Red Hat Enterprise Linux 9.2 Extended Update Support
Red Hat OpenShift Container Platform 4.13
Red Hat OpenShift Container Platform 4.14
Red Hat OpenShift Container Platform 4.15
Red Hat OpenShift Container Platform 4.16
Red Hat Ceph Storage 5
CWE-364
Published: 1 Jul 2024
Updated: 15 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.1	High	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 1.00, the 99th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 1 Jul 2024. New records show when each source confirmed them.

Sources

References from the CNA

access.redhat.com/errata/RHSA-2024:4312 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:4340 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:4389 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:4469 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:4474 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:4479 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:4484 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2024-6387 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2294604 issue-trackingredhat
santandersecurityresearch.github.io/blog/sshing_the_masses.html
www.openssh.com/txt/release-9.8
www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.