High severity8.1OSV Advisory· Published Jul 1, 2024· Updated May 12, 2026
CVE-2024-6387
CVE-2024-6387
Description
A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
104- Range: 10_13_2015, ABOUT_TO_ADD_INET_ATON, AFTER_FREEBSD_PAM_MERGE, …
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
- cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*Range: >=11.0.0,<=11.70.2
- cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:ontap_tools:10:*:*:*:*:vmware_vsphere:*:*+ 1 more
- cpe:2.3:a:netapp:ontap_tools:10:*:*:*:*:vmware_vsphere:*:*
- cpe:2.3:a:netapp:ontap_tools:9:*:*:*:*:vmware_vsphere:*:*
- cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
- cpe:2.3:o:amazon:amazon_linux:2023.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*+ 4 more
- cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:22.10:*:*:*:-:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:23.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:23.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:24.04:*:*:*:lts:*:*:*
cpe:2.3:o:freebsd:freebsd:13.2:-:*:*:*:*:*:*+ 28 more
- cpe:2.3:o:freebsd:freebsd:13.2:-:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.2:p1:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.2:p10:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.2:p11:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.2:p2:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.2:p3:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.2:p4:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.2:p5:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.2:p6:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.2:p7:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.2:p8:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.2:p9:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.3:-:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.3:p1:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.3:p2:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:13.3:p3:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.0:-:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.0:beta5:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.0:p1:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.0:p2:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.0:p3:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.0:p4:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.0:p5:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.0:p6:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.0:p7:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.0:rc3:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.0:rc4-p1:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.1:-:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:14.1:p1:*:*:*:*:*:*
- cpe:2.3:o:netapp:500f_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:8300_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:8700_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:a150_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:a1k_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:a220_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:a250_firmware:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:netapp:a250_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:c250_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:a400_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:a700s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:a70_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:a800_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:a900_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:a90_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:a9500_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:c190_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:c400_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:c800_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:fas2720_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:fas2750_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:fas2820_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_eus:9.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_arm_64:9.0_aarch64:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_arm_64_eus:9.4_aarch64:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_for_arm_64_eus:9.4_aarch64:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.4_s390x:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.4_ppc64le:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:9.4:*:*:*:*:*:*:*
- cpe:2.3:o:sonicwall:sma_6200_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sonicwall:sma_6210_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sonicwall:sma_7200_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sonicwall:sma_7210_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sonicwall:sma_8200v_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sonicwall:sra_ex_7000_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:suse:linux_enterprise_micro:6.0:*:*:*:*:*:*:*
- osv-coords12 versionspkg:rpm/almalinux/opensshpkg:rpm/almalinux/openssh-askpasspkg:rpm/almalinux/openssh-clientspkg:rpm/almalinux/openssh-keycatpkg:rpm/almalinux/openssh-serverpkg:rpm/almalinux/pam_ssh_agent_authpkg:rpm/opensuse/openssh-askpass-gnome&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/openssh&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/openssh&distro=openSUSE%20Tumbleweedpkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP6pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Micro%206.0
< 8.7p1-38.el9_4.1+ 11 more
- (no CPE)range: < 8.7p1-38.el9_4.1
- (no CPE)range: < 8.7p1-38.el9_4.1
- (no CPE)range: < 8.7p1-38.el9_4.1
- (no CPE)range: < 8.7p1-38.el9_4.1
- (no CPE)range: < 8.7p1-38.el9_4.1
- (no CPE)range: < 0.10.4-5.38.el9_4.1
- (no CPE)range: < 9.6p1-150600.6.3.1
- (no CPE)range: < 9.6p1-150600.6.3.1
- (no CPE)range: < 9.6p1-10.1
- (no CPE)range: < 9.6p1-150600.6.3.1
- (no CPE)range: < 9.6p1-150600.6.3.1
- (no CPE)range: < 9.6p1-2.1
Patches
Vulnerability mechanics
References
79- www.openwall.com/lists/oss-security/2024/07/03/3nvdMailing ListPatch
- github.com/openela-main/openssh/commit/e1f438970e5a337a17070a637c1b9e19697cad09nvdPatch
- lists.mindrot.org/pipermail/openssh-unix-dev/2024-July/041431.htmlnvdMailing ListPatch
- news.ycombinator.com/itemnvdIssue TrackingPatch
- www.openwall.com/lists/oss-security/2024/07/03/11nvdExploitMailing List
- www.openwall.com/lists/oss-security/2024/07/04/2nvdExploitMailing List
- www.openwall.com/lists/oss-security/2024/07/08/2nvdExploitMailing List
- www.openwall.com/lists/oss-security/2024/07/09/5nvdExploitMailing List
- www.openwall.com/lists/oss-security/2024/07/10/1nvdExploitMailing List
- santandersecurityresearch.github.io/blog/sshing_the_masses.htmlnvdExploitThird Party Advisory
- www.exploit-db.com/exploits/52269nvdExploit
- www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txtnvdExploitThird Party Advisory
- www.vicarius.io/vsociety/posts/regresshion-an-openssh-regression-error-cve-2024-6387nvdExploitThird Party Advisory
- access.redhat.com/errata/RHSA-2024:4312nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2024:4340nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2024:4389nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2024:4469nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2024:4474nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2024:4479nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2024:4484nvdThird Party Advisory
- access.redhat.com/security/cve/CVE-2024-6387nvdThird Party Advisory
- archlinux.org/news/the-sshd-service-needs-to-be-restarted-after-upgrading-to-openssh-98p1/nvdThird Party Advisory
- arstechnica.com/security/2024/07/regresshion-vulnerability-in-openssh-gives-attackers-root-on-linux/nvdPress/Media CoverageThird Party Advisory
- blog.qualys.com/vulnerabilities-threat-research/2024/07/01/regresshion-remote-unauthenticated-code-execution-vulnerability-in-openssh-servernvdPress/Media CoverageThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdThird Party Advisory
- explore.alas.aws.amazon.com/CVE-2024-6387.htmlnvdThird Party Advisory
- lists.almalinux.org/archives/list/announce@lists.almalinux.org/thread/23BF5BMGFVEVUI2WNVAGMLKT557EU7VY/nvdThird Party Advisory
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0010nvdThird Party Advisory
- security-tracker.debian.org/tracker/CVE-2024-6387nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20240701-0001/nvdThird Party Advisory
- sig-security.rocky.page/issues/CVE-2024-6387/nvdThird Party Advisory
- stackdiary.com/openssh-race-condition-in-sshd-allows-remote-code-execution/nvdPress/Media CoverageThird Party Advisory
- support.apple.com/kb/HT214118nvdThird Party Advisory
- support.apple.com/kb/HT214119nvdThird Party Advisory
- support.apple.com/kb/HT214120nvdThird Party Advisory
- ubuntu.com/security/CVE-2024-6387nvdThird Party Advisory
- ubuntu.com/security/notices/USN-6859-1nvdThird Party Advisory
- www.akamai.com/blog/security-research/2024-openssh-vulnerability-regression-what-to-know-and-donvdThird Party Advisory
- www.arista.com/en/support/advisories-notices/security-advisory/19904-security-advisory-0100nvdThird Party Advisory
- www.freebsd.org/security/advisories/FreeBSD-SA-24:04.openssh.ascnvdThird Party Advisory
- www.openssh.com/txt/release-9.8nvdRelease NotesThird Party Advisory
- www.splunk.com/en_us/blog/security/cve-2024-6387-regresshion-vulnerability.htmlnvdThird Party Advisory
- www.suse.com/security/cve/CVE-2024-6387.htmlnvdThird Party Advisory
- www.theregister.com/2024/07/01/regresshion_openssh/nvdPress/Media CoverageThird Party Advisory
- seclists.org/fulldisclosure/2024/Jul/18nvdMailing List
- seclists.org/fulldisclosure/2024/Jul/19nvdMailing List
- seclists.org/fulldisclosure/2024/Jul/20nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/01/12nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/01/13nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/02/1nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/03/1nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/03/2nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/03/4nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/03/5nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/04/1nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/08/3nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/09/2nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/10/2nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/10/3nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/10/4nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/10/6nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/11/1nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/11/3nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/23/4nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/23/6nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/28/2nvdMailing List
- www.openwall.com/lists/oss-security/2024/07/28/3nvdMailing List
- forum.vmssoftware.com/viewtopic.phpnvdIssue Tracking
- ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2024-002.txt.ascnvdRelease Notes
- github.com/AlmaLinux/updates/issues/629nvdIssue Tracking
- github.com/Azure/AKS/issues/4379nvdIssue Tracking
- github.com/PowerShell/Win32-OpenSSH/issues/2249nvdIssue Tracking
- github.com/microsoft/azurelinux/issues/9555nvdIssue Tracking
- github.com/oracle/oracle-linux/issues/149nvdIssue Tracking
- github.com/rapier1/hpn-ssh/issues/87nvdIssue Tracking
- lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.htmlnvdMailing ListRelease Notes
- packetstorm.news/files/id/190587/nvdBroken Link
- cert-portal.siemens.com/productcert/html/ssa-082556.htmlnvd
- cert-portal.siemens.com/productcert/html/ssa-446545.htmlnvd
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