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.

Published: 2011-01-28 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-0343 is rated Low Risk (32.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.04%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-0343

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 2026-03-02 0.13% 0.04% -0.09%
2 2025-03-17 0.04% 0.13% +0.09%
3 2023-03-07 — 0.04% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-0343

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.9 2.0 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.4 10.0 [email protected]

Weakness enumeration for CVE-2011-0343

OS Trackers for CVE-2011-0343

vendor priority summary link
debian not yet assigned CVE-2011-0343 not yet assigned priority: Debian including 1 source packages (syslog-ng), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2011-0343
ubuntu low CVE-2011-0343 low priority: Ubuntu including 1 source packages (syslog-ng), 21 status rows across 21 suites (artful, bionic, dapper, hardy, karmic, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 17, not-affected 3, released 1. https://ubuntu.com/security/CVE-2011-0343

Affected software / configurations for CVE-2011-0343

Vendor Product Version Raw CPE
oneidentity syslog-ng 2.0 cpe:2.3:a:oneidentity:syslog-ng:2.0:*:*:*:open_source:*:*:*
oneidentity syslog-ng 2.0 cpe:2.3:a:oneidentity:syslog-ng:2.0:*:*:*:premium:*:*:*
oneidentity syslog-ng 3.0 cpe:2.3:a:oneidentity:syslog-ng:3.0:*:*:*:open_source:*:*:*
oneidentity syslog-ng 3.0 cpe:2.3:a:oneidentity:syslog-ng:3.0:*:*:*:premium:*:*:*
oneidentity syslog-ng 3.1 cpe:2.3:a:oneidentity:syslog-ng:3.1:*:*:*:open_source:*:*:*
oneidentity syslog-ng 3.1 cpe:2.3:a:oneidentity:syslog-ng:3.1:*:*:*:premium:*:*:*
oneidentity syslog-ng 3.2 cpe:2.3:a:oneidentity:syslog-ng:3.2:*:*:*:open_source:*:*:*
oneidentity syslog-ng 3.2 cpe:2.3:a:oneidentity:syslog-ng:3.2:*:*:*:premium:*:*:*

References for CVE-2011-0343

cvelogic Threat Intelligence