Permissions, Privileges, and Access Controls in Keepalived - CVE-2011-1784
Published: May 21, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45037
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2011-1784
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Keepalived
Keepalived
Software vendor:
Keepalived
Keepalived
Description
The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.
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.
Remediation
Install update from vendor's website.
External links
- 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