How severe is CVE-2011-2147?

CVE-2011-2147 has a CVSS 2.0 base score of 3.6, rated low severity.

Is CVE-2011-2147 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-2147?

CVE-2011-2147 primarily affects Openswan. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-2147?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-2147 published?

CVE-2011-2147 was published on 2011-05-20 and last updated on 2026-06-16.

CVE-2011-2147

CVE-2011-2147 is a low-severity vulnerability in Openswan with a CVSS 2.0 base score of 3.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Low (CVSS 2.0 base score 3.6)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Openswan
Published: 2011-05-20
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2011-2147?: 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.
How severe is CVE-2011-2147?: CVE-2011-2147 has a CVSS 2.0 base score of 3.6, rated low severity.
Is CVE-2011-2147 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-2147?: CVE-2011-2147 primarily affects Openswan. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-2147?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-2147 published?: CVE-2011-2147 was published on 2011-05-20 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:openswan:openswan:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:openswan:openswan:2.2.1:*:*:*:*:*:*:*

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