The (1) fence_apc and (2) fence_apc_snmp programs, as used in (a) fence 2.02.00-r1 and possibly (b) cman, when running in verbose mode, allows local users to append to arbitrary files via a symlink attack on the apclog temporary file.
Conclusion & alert: CVE-2008-4579 is rated Low Risk (16.9/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.34%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.05% | 0.34% | +0.29% |
| 2 | 2025-03-17 | 0.04% | 0.05% | +0.01% |
| 3 | 2023-03-07 | — | 0.04% | — |
Full EPSS history (4 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 1.9 | 2.0 | LOW |
|
3.4 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2008-4579: 1 GLSA(s) (201009-09), 1 atom(s) (sys-cluster/fence); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2008-4579 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2008-4579 |
ubuntu
|
medium | CVE-2008-4579 medium priority: Ubuntu including 2 source packages (redhat-cluster, redhat-cluster-suite), 16 status rows across 8 suites (dapper, feisty, gutsy, hardy, intrepid, jaunty, karmic, upstream): DNE 7, not-affected 3, released 3, ignored 2, needs-triage 1. | https://ubuntu.com/security/CVE-2008-4579 |
The Red Hat Security Response Team has rated this issue as having low security impact. This issue is addressed in the cman package for Red Hat Enterprise Linux 5: https://rhn.redhat.com/errata/RHSA-2009-1337.html This issue also affects the fence package in Red Hat Cluster Suite for Enterprise Linux 4AS, a future update may address this flaw: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2008-4579