Description
Certain Red Hat Enterprise Linux (RHEL) 4 and 5 packages for OpenSSH, as signed in August 2008 using a legitimate Red Hat GPG key, contain an externally introduced modification (Trojan Horse) that allows the package authors to have an unknown impact. NOTE: since the malicious packages were not distributed from any official Red Hat sources, the scope of this issue is restricted to users who may have obtained these packages through unofficial distribution points. As of 20080827, no unofficial distributions of this software are known.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | openssh +3 | 4.3p2-26.el5_2.1 | RHSA-2008:0855 |
| RHEL 4 | openssh +4 | 3.9p1-11.el4_7 | RHSA-2008:0855 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4.5 EUS | openssh +4 | 3.9p1-10.RHEL4.20 | RHSA-2008:0855 |
Advisories 3
- RHSA-2008:0855 Red Hat Security Advisory: openssh security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- SCA-2025-0011 Vulnerabilities affecting Endress+Hauser SSG-E210GC SICK PSIRT · Oct 2, 2025
- SCA-2025-0009 Vulnerabilities affecting SICK TDC-E210GC SICK PSIRT · Aug 1, 2025
References
- http://support.avaya.com/elmodocs2/security/ASA-2008-399.htm
- http://www.redhat.com/security/data/openssh-blacklist.html
- ADV-2008-2821 vdb-entry
- 31575 third-party-advisory
- RHSA-2008:0855 vendor-advisory
- openssh-rhel-backdoor(44747) vdb-entry
- 1020730 vdb-entry
- 30794 vdb-entry
- 32241 third-party-advisory