CVE-2024-6387
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-6387
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-6387.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-6387
- Downstream
- Related
- Published
- 2024-07-01T13:15:06Z
- Modified
- 2025-10-25T04:12:24.843168Z
- Severity
-
- 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
-
- https://access.redhat.com/errata/RHSA-2024:4312
- https://access.redhat.com/errata/RHSA-2024:4340
- https://access.redhat.com/errata/RHSA-2024:4389
- https://access.redhat.com/errata/RHSA-2024:4469
- https://access.redhat.com/errata/RHSA-2024:4474
- https://access.redhat.com/errata/RHSA-2024:4479
- https://access.redhat.com/errata/RHSA-2024:4484
- https://access.redhat.com/security/cve/CVE-2024-6387
- https://bugzilla.redhat.com/show_bug.cgi?id=2294604
- https://santandersecurityresearch.github.io/blog/sshing_the_masses.html
- https://www.openssh.com/txt/release-9.8
- https://www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt
- https://archlinux.org/news/the-sshd-service-needs-to-be-restarted-after-upgrading-to-openssh-98p1/
- https://arstechnica.com/security/2024/07/regresshion-vulnerability-in-openssh-gives-attackers-root-on-linux/
- https://blog.qualys.com/vulnerabilities-threat-research/2024/07/01/regresshion-remote-unauthenticated-code-execution-vulnerability-in-openssh-server
- https://explore.alas.aws.amazon.com/CVE-2024-6387.html
- https://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2024-002.txt.asc
- https://github.com/zgzhang/cve-2024-6387-poc
- https://lists.almalinux.org/archives/list/announce@lists.almalinux.org/thread/23BF5BMGFVEVUI2WNVAGMLKT557EU7VY/
- https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0010
- https://security-tracker.debian.org/tracker/CVE-2024-6387
- https://security.netapp.com/advisory/ntap-20240701-0001/
- https://sig-security.rocky.page/issues/CVE-2024-6387/
- https://stackdiary.com/openssh-race-condition-in-sshd-allows-remote-code-execution/
- https://support.apple.com/kb/HT214118
- https://support.apple.com/kb/HT214119
- https://support.apple.com/kb/HT214120
- https://ubuntu.com/security/CVE-2024-6387
- https://ubuntu.com/security/notices/USN-6859-1
- https://www.akamai.com/blog/security-research/2024-openssh-vulnerability-regression-what-to-know-and-do
- https://www.arista.com/en/support/advisories-notices/security-advisory/19904-security-advisory-0100
- https://www.freebsd.org/security/advisories/FreeBSD-SA-24:04.openssh.asc
- https://www.splunk.com/en_us/blog/security/cve-2024-6387-regresshion-vulnerability.html
- https://www.suse.com/security/cve/CVE-2024-6387.html
- https://www.theregister.com/2024/07/01/regresshion_openssh/
- https://www.vicarius.io/vsociety/posts/regresshion-an-openssh-regression-error-cve-2024-6387
- http://seclists.org/fulldisclosure/2024/Jul/18
- http://seclists.org/fulldisclosure/2024/Jul/19
- http://seclists.org/fulldisclosure/2024/Jul/20
- http://www.openwall.com/lists/oss-security/2024/07/01/12
- http://www.openwall.com/lists/oss-security/2024/07/01/13
- http://www.openwall.com/lists/oss-security/2024/07/02/1
- http://www.openwall.com/lists/oss-security/2024/07/03/1
- http://www.openwall.com/lists/oss-security/2024/07/03/11
- http://www.openwall.com/lists/oss-security/2024/07/03/2
- http://www.openwall.com/lists/oss-security/2024/07/03/3
- http://www.openwall.com/lists/oss-security/2024/07/03/4
- http://www.openwall.com/lists/oss-security/2024/07/03/5
- http://www.openwall.com/lists/oss-security/2024/07/04/1
- http://www.openwall.com/lists/oss-security/2024/07/04/2
- http://www.openwall.com/lists/oss-security/2024/07/08/2
- http://www.openwall.com/lists/oss-security/2024/07/08/3
- http://www.openwall.com/lists/oss-security/2024/07/09/2
- http://www.openwall.com/lists/oss-security/2024/07/09/5
- http://www.openwall.com/lists/oss-security/2024/07/10/1
- http://www.openwall.com/lists/oss-security/2024/07/10/2
- http://www.openwall.com/lists/oss-security/2024/07/10/3
- http://www.openwall.com/lists/oss-security/2024/07/10/4
- http://www.openwall.com/lists/oss-security/2024/07/10/6
- http://www.openwall.com/lists/oss-security/2024/07/11/1
- http://www.openwall.com/lists/oss-security/2024/07/11/3
- http://www.openwall.com/lists/oss-security/2024/07/23/4
- http://www.openwall.com/lists/oss-security/2024/07/23/6
- http://www.openwall.com/lists/oss-security/2024/07/28/2
- http://www.openwall.com/lists/oss-security/2024/07/28/3
- https://lists.mindrot.org/pipermail/openssh-unix-dev/2024-July/041431.html
- https://www.exploit-db.com/exploits/52269
- https://github.com/openela-main/openssh/commit/e1f438970e5a337a17070a637c1b9e19697cad09
- https://news.ycombinator.com/item?id=40843778
- https://forum.vmssoftware.com/viewtopic.php?f=8&t=9132
- https://github.com/AlmaLinux/updates/issues/629
- https://github.com/Azure/AKS/issues/4379
- https://github.com/PowerShell/Win32-OpenSSH/discussions/2248
- https://github.com/PowerShell/Win32-OpenSSH/issues/2249
- https://github.com/microsoft/azurelinux/issues/9555
- https://github.com/oracle/oracle-linux/issues/149
- https://github.com/rapier1/hpn-ssh/issues/87
- https://packetstorm.news/files/id/190587/
Affected packages
Git / github.com/openssh/openssh-portable
Affected ranges
- Type
- GIT
- Repo
- https://github.com/openssh/openssh-portable
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
Other
ABOUT_TO_ADD_INET_ATON
AFTER_FREEBSD_PAM_MERGE
AFTER_KRB5_GSSAPI_MERGE
BEFORE_FREEBSD_PAM_MERGE
BEFORE_KRB5_GSSAPI_MERGE
POST_KRB4_REMOVAL
PRE-REORDER
PRE_CYGWIN_MERGE
PRE_DAN_PATCH_MERGE
PRE_FIXPATHS_INTEGRATION
PRE_HPUX_INTEGRATION
PRE_IPV6
PRE_KRB4_REMOVAL
PRE_NEW_LOGIN_CODE
PRE_SW_KRBV
V_1_2PRE17
V_1_2_1_PRE18
V_1_2_1_PRE19
V_1_2_1_PRE20
V_1_2_1_PRE21
V_1_2_1_PRE22
V_1_2_1_PRE23
V_1_2_1_PRE24
V_1_2_1_PRE25
V_1_2_1_PRE26
V_1_2_1_PRE27
V_1_2_2
V_1_2_2_P1
V_1_2_2_PRE28
V_1_2_2_PRE29
V_1_2_3
V_1_2_3_PRE1
V_1_2_3_PRE2
V_1_2_3_PRE3
V_1_2_3_PRE4
V_1_2_3_PRE5
V_1_2_3_TEST1
V_1_2_3_TEST2
V_1_2_3_TEST3
V_1_2_PRE10
V_1_2_PRE11
V_1_2_PRE12
V_1_2_PRE13
V_1_2_PRE14
V_1_2_PRE15
V_1_2_PRE16
V_1_2_PRE4
V_1_2_PRE5
V_1_2_PRE6
V_1_2_PRE7
V_1_2_PRE8
V_1_2_PRE9
V_2_0_0_BETA1
V_2_0_0_BETA2
V_2_0_0_TEST1
V_2_1_0
V_2_1_0_P1
V_2_1_0_P2
V_2_1_0_P3
V_2_1_1_P1
V_2_1_1_P2
V_2_1_1_P3
V_2_1_1_P4
V_2_2_0_P1
V_2_3_0_P1
V_2_5_0_P1
V_2_5_1_P1
V_2_5_1_P2
V_2_5_2_P1
V_3_0_1_P1
V_3_0_P1
V_3_1_P1
V_3_2_2_P1
V_3_4_P1
V_3_6_1_P1
V_3_8_P1
V_3_9_P1
V_4_2_P1