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.
Problem types
Product status
8.5p1 (custom)
0:8.7p1-38.el9_4.1 (rpm) before *
0:8.7p1-38.el9_4.1 (rpm) before *
0:8.7p1-12.el9_0.1 (rpm) before *
0:8.7p1-30.el9_2.4 (rpm) before *
413.92.202407091321-0 (rpm) before *
414.92.202407091253-0 (rpm) before *
415.92.202407091355-0 (rpm) before *
416.94.202407081958-0 (rpm) before *
Timeline
| 2024-06-27: | Reported to Red Hat. |
| 2024-07-01: | Made public. |
Credits
Red Hat would like to thank Qualys Threat Research Unit (TRU) (Qualys) for reporting this issue.
References
www.vicarius.io/...an-openssh-regression-error-cve-2024-6387
www.exploit-db.com/exploits/52269
packetstorm.news/files/id/190587/
www.openwall.com/lists/oss-security/2024/07/01/12
www.openwall.com/lists/oss-security/2024/07/01/13
www.openwall.com/lists/oss-security/2024/07/02/1
www.openwall.com/lists/oss-security/2024/07/03/1
www.openwall.com/lists/oss-security/2024/07/03/11
www.openwall.com/lists/oss-security/2024/07/03/2
www.openwall.com/lists/oss-security/2024/07/03/3
www.openwall.com/lists/oss-security/2024/07/03/4
www.openwall.com/lists/oss-security/2024/07/03/5
www.openwall.com/lists/oss-security/2024/07/04/1
www.openwall.com/lists/oss-security/2024/07/04/2
www.openwall.com/lists/oss-security/2024/07/08/2
www.openwall.com/lists/oss-security/2024/07/08/3
www.openwall.com/lists/oss-security/2024/07/09/2
www.openwall.com/lists/oss-security/2024/07/09/5
www.openwall.com/lists/oss-security/2024/07/10/1
www.openwall.com/lists/oss-security/2024/07/10/2
www.openwall.com/lists/oss-security/2024/07/10/3
www.openwall.com/lists/oss-security/2024/07/10/4
www.openwall.com/lists/oss-security/2024/07/10/6
www.openwall.com/lists/oss-security/2024/07/11/1
www.openwall.com/lists/oss-security/2024/07/11/3
www.openwall.com/lists/oss-security/2024/07/23/4
www.openwall.com/lists/oss-security/2024/07/23/6
www.openwall.com/lists/oss-security/2024/07/28/2
www.openwall.com/lists/oss-security/2024/07/28/3
access.redhat.com/errata/RHSA-2024:4312 (RHSA-2024:4312)
access.redhat.com/errata/RHSA-2024:4340 (RHSA-2024:4340)
access.redhat.com/errata/RHSA-2024:4389 (RHSA-2024:4389)
access.redhat.com/errata/RHSA-2024:4469 (RHSA-2024:4469)
access.redhat.com/errata/RHSA-2024:4474 (RHSA-2024:4474)
access.redhat.com/errata/RHSA-2024:4479 (RHSA-2024:4479)
access.redhat.com/errata/RHSA-2024:4484 (RHSA-2024:4484)
access.redhat.com/security/cve/CVE-2024-6387
archlinux.org/...-restarted-after-upgrading-to-openssh-98p1/
arstechnica.com/...in-openssh-gives-attackers-root-on-linux/
blog.qualys.com/...execution-vulnerability-in-openssh-server
bugzilla.redhat.com/show_bug.cgi?id=2294604 (RHBZ#2294604)
explore.alas.aws.amazon.com/CVE-2024-6387.html
forum.vmssoftware.com/viewtopic.php?f=8&t=9132
ftp.netbsd.org/...urity/advisories/NetBSD-SA2024-002.txt.asc
github.com/AlmaLinux/updates/issues/629
github.com/Azure/AKS/issues/4379
github.com/PowerShell/Win32-OpenSSH/discussions/2248
github.com/PowerShell/Win32-OpenSSH/issues/2249
github.com/microsoft/azurelinux/issues/9555
github.com/...ommit/e1f438970e5a337a17070a637c1b9e19697cad09
github.com/oracle/oracle-linux/issues/149
github.com/rapier1/hpn-ssh/issues/87
github.com/zgzhang/cve-2024-6387-poc
lists.almalinux.org/...ead/23BF5BMGFVEVUI2WNVAGMLKT557EU7VY/
lists.mindrot.org/...ssh-unix-announce/2024-July/000158.html
lists.mindrot.org/.../openssh-unix-dev/2024-July/041431.html
news.ycombinator.com/item?id=40843778
psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0010
santandersecurityresearch.github.io/...shing_the_masses.html
security-tracker.debian.org/tracker/CVE-2024-6387
security.netapp.com/advisory/ntap-20240701-0001/
sig-security.rocky.page/issues/CVE-2024-6387/
stackdiary.com/...tion-in-sshd-allows-remote-code-execution/
ubuntu.com/security/CVE-2024-6387
ubuntu.com/security/notices/USN-6859-1
www.akamai.com/...lnerability-regression-what-to-know-and-do
www.arista.com/...rity-advisory/19904-security-advisory-0100
www.freebsd.org/...y/advisories/FreeBSD-SA-24:04.openssh.asc
www.openssh.com/txt/release-9.8
www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt
www.splunk.com/...e-2024-6387-regresshion-vulnerability.html
www.suse.com/security/cve/CVE-2024-6387.html
www.theregister.com/2024/07/01/regresshion_openssh/
seclists.org/fulldisclosure/2024/Jul/20
seclists.org/fulldisclosure/2024/Jul/18
seclists.org/fulldisclosure/2024/Jul/19
access.redhat.com/errata/RHSA-2024:4312 (RHSA-2024:4312)
access.redhat.com/errata/RHSA-2024:4340 (RHSA-2024:4340)
access.redhat.com/errata/RHSA-2024:4389 (RHSA-2024:4389)
access.redhat.com/errata/RHSA-2024:4469 (RHSA-2024:4469)
access.redhat.com/errata/RHSA-2024:4474 (RHSA-2024:4474)
access.redhat.com/errata/RHSA-2024:4479 (RHSA-2024:4479)
access.redhat.com/errata/RHSA-2024:4484 (RHSA-2024:4484)
access.redhat.com/security/cve/CVE-2024-6387
bugzilla.redhat.com/show_bug.cgi?id=2294604 (RHBZ#2294604)
santandersecurityresearch.github.io/...shing_the_masses.html
www.openssh.com/txt/release-9.8
www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt
