How severe is CVE-2011-0343?

CVE-2011-0343 has a CVSS 2.0 base score of 6.9, rated medium severity.

Is CVE-2011-0343 being actively exploited?

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

What products are affected by CVE-2011-0343?

CVE-2011-0343 primarily affects Oneidentity Syslog-ng. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-0343?

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

When was CVE-2011-0343 published?

CVE-2011-0343 was published on 2011-01-28 and last updated on 2026-06-16.

CVE-2011-0343

CVE-2011-0343 is a medium-severity vulnerability in Oneidentity Syslog-ng with a CVSS 2.0 base score of 6.9. 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: Medium (CVSS 2.0 base score 6.9)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Oneidentity Syslog-ng
Published: 2011-01-28
Last modified: 2026-06-16

Description

Balabit syslog-ng 2.0, 3.0, 3.1, 3.2 OSE and PE, when running on FreeBSD or HP-UX, does not properly perform cast operations, which causes syslog-ng to use a default value of -1 to create log files with insecure permissions (07777), which allows local users to read and write to these log files.

Frequently asked questions

What is CVE-2011-0343?: Balabit syslog-ng 2.0, 3.0, 3.1, 3.2 OSE and PE, when running on FreeBSD or HP-UX, does not properly perform cast operations, which causes syslog-ng to use a default value of -1 to create log files with insecure permissions (07777), which allows local users to read and write to these log files.
How severe is CVE-2011-0343?: CVE-2011-0343 has a CVSS 2.0 base score of 6.9, rated medium severity.
Is CVE-2011-0343 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0343?: CVE-2011-0343 primarily affects Oneidentity Syslog-ng. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-0343?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-0343 published?: CVE-2011-0343 was published on 2011-01-28 and last updated on 2026-06-16.

References

Affected products (8)

cpe:2.3:a:oneidentity:syslog-ng:2.0:*:*:*:open_source:*:*:*
cpe:2.3:a:oneidentity:syslog-ng:2.0:*:*:*:premium:*:*:*
cpe:2.3:a:oneidentity:syslog-ng:3.0:*:*:*:open_source:*:*:*
cpe:2.3:a:oneidentity:syslog-ng:3.0:*:*:*:premium:*:*:*
cpe:2.3:a:oneidentity:syslog-ng:3.1:*:*:*:open_source:*:*:*
cpe:2.3:a:oneidentity:syslog-ng:3.1:*:*:*:premium:*:*:*
cpe:2.3:a:oneidentity:syslog-ng:3.2:*:*:*:open_source:*:*:*
cpe:2.3:a:oneidentity:syslog-ng:3.2:*:*:*:premium:*:*:*

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