Red Hat Bugzilla – Bug 476564
CVE-2008-5618 rsyslog: DoS in the imupd plugin by emitting messages when a non-permitted sender tried to send a message to it
Last modified: 2009-01-09 03:39:58 EST
A denial of service flaw was reported in the upstream Rsyslog syslogd
support. A non-permitted sender could send a message to the imudp plugin,
which would reply by emitting a message, each time such an request
was made. This could allow an attacker to cause a DoS (excessive disk space
Upstream patch against 3.20.2 (v3-stable) version:
This issue does NOT affect the version of the Rsyslog package, as shipped
with Red Hat Enterprise Linux 5.
This issue affects the versions of the Rsyslog package, as shipped
with Fedora releases of 9, 10 and devel (Fedora release of 8 is not
This issue affects versions 3.20.1 and 3.21.8.
The current versions in Fedora 9, 10 and devel are 3.20.2, 3.21.9 and 3.21.9, respectively.
The referenced patch should be against version 3.20.1.
rsyslog-3.20.2-2.fc9 has been submitted as an update for Fedora 9.
CVE id CVE-2008-5618 was assigned to this issue:
imudp in rsyslog 4.x before 4.1.2, 3.21 before 3.21.9 beta, and 3.20
before 3.20.2 generates a message even when it is sent by an
unauthorized sender, which allows remote attackers to cause a denial
of service (disk consumption) via a large number of spurious messages.
rsyslog-3.20.2-2.fc9 has been pushed to the Fedora 9 stable repository. If problems still persist, please make note of it in this bug report.
rsyslog-3.21.9-1.fc10 has been pushed to the Fedora 10 stable repository. If problems still persist, please make note of it in this bug report.
This issue was addressed in: