CVE-2011-1784

Severity: low (CVSS 3.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-05-20 · updated 2026-06-16
Weakness: CWE-264

Description

The pidfile_write function in core/pidfile.c in keepalived 1.2.2 and earlier uses 0666 permissions for the (1) keepalived.pid, (2) checkers.pid, and (3) vrrp.pid files in /var/run/, which allows local users to kill arbitrary processes by writing a PID to one of these files.

Affected products

Keepalived: through 1.2.2; 0.2.1, 0.2.3, 0.2.6, 0.2.7, 0.3.5, 0.3.6 (+50)

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=626281
http://lists.debian.org/debian-security/2011/05/msg00012.html
http://lists.debian.org/debian-security/2011/05/msg00013.html
http://lists.debian.org/debian-security/2011/05/msg00018.html
http://openwall.com/lists/oss-security/2011/05/10/5
http://openwall.com/lists/oss-security/2011/05/16/7
http://secunia.com/advisories/44460
http://www.osvdb.org/72380
http://www.securityfocus.com/bid/47859
https://bugzilla.redhat.com/show_bug.cgi?id=704039
https://exchange.xforce.ibmcloud.com/vulnerabilities/67477
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=626281

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