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CVE-2018-19044

Status Candidate

Overview

keepalived 2.0.8 didn't check for pathnames with symlinks when writing data to a temporary file upon a call to PrintData or PrintStats. This allowed local users to overwrite arbitrary files if fs.protected_symlinks is set to 0, as demonstrated by a symlink from /tmp/keepalived.data or /tmp/keepalived.stats to /etc/passwd.

Related Files

Red Hat Security Advisory 2019-2285-01
Posted Aug 6, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-2285-01 - The keepalived utility provides simple and robust facilities for load balancing and high availability. The load balancing framework relies on the well-known and widely used IP Virtual Server kernel module providing layer-4 load balancing. Keepalived implements a set of checkers to dynamically and adaptively maintain and manage a load balanced server pool according to the health of the servers. Keepalived also implements the Virtual Router Redundancy Protocol to achieve high availability with director failover. An improper path name validation was addressed.

tags | advisory, kernel, protocol
systems | linux, redhat
advisories | CVE-2018-19044
MD5 | 0072dd811a4df2fa85a71172b3353820
Gentoo Linux Security Advisory 201903-01
Posted Mar 10, 2019
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201903-1 - Multiple vulnerabilities have been found in Keepalived, the worst of which could allow an attacker to cause Denial of Service condition. Versions less than 2.0.10 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2018-19044, CVE-2018-19045, CVE-2018-19046, CVE-2018-19115
MD5 | b871631c7c75a9ff65246226d82a5d6d
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