Description
yum-rhn-plugin in Red Hat Enterprise Linux (RHEL) 5 does not verify the SSL certificate for a file download from a Red Hat Network (RHN) server, which makes it easier for remote man-in-the-middle attackers to cause a denial of service (loss of updates) or force the download and installation of official Red Hat packages that were not requested.
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 | yum-rhn-plugin | 0.5.3-12.el5_2.9 | RHSA-2008:0815 |
Advisories 1
- RHSA-2008:0815 Red Hat Security Advisory: yum-rhn-plugin security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- RHSA-2008:0815 vendor-advisory
- 31472 third-party-advisory
- oval:org.mitre.oval:def:10864 vdb-entry signature
- 1020698 vdb-entry
- 30695 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=457113