Openswan 2.2.x does not properly restrict permissions for (1) /var/run/starter.pid, related to starter.c in the IPsec starter, and (2) /var/lock/subsys/ipsec, which allows local users to kill arbitrary processes by writing a PID to a file, or possibly bypass disk quotas by writing arbitrary data to a file, as demonstrated by files with 0666 permissions, a different vulnerability than CVE-2011-1784.
Conclusion & alert: CVE-2011-2147 is rated Low Risk (15.5/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.04%). 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 | 2023-03-07 | 0.95% | 0.04% | -0.91% |
| 2 | 2022-02-04 | — | 0.95% | — |
Full EPSS history (2 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 3.6 | 2.0 | LOW |
|
3.9 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2011-2147: 1 GLSA(s) (201203-13), 1 atom(s) (net-misc/openswan); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-2147 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2011-2147 |
ubuntu
|
low | CVE-2011-2147 low priority: Ubuntu including 1 source packages (openswan), 7 status rows across 7 suites (dapper, hardy, lucid, maverick, natty, oneiric, upstream): not-affected 5, ignored 1, needs-triage 1. | https://ubuntu.com/security/CVE-2011-2147 |