#VU32475 Buffer overflow in rsyslog - CVE-2014-3634
Vulnerability identifier: #VU32475
Vulnerability risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-119
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
rsyslog
Server applications /
Other server solutions
Vendor: rsyslog.com
Description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
rsyslog before 7.6.6 and 8.x before 8.4.1 and sysklogd 1.5 and earlier allows remote attackers to cause a denial of service (crash), possibly execute arbitrary code, or have other unspecified impact via a crafted priority (PRI) value that triggers an out-of-bounds array access.
Mitigation
Install update from vendor's website.
Vulnerable software versions
rsyslog: 7.6.0 - 7.6.5
External links
https://advisories.mageia.org/MGASA-2014-0411.html
https://linux.oracle.com/errata/ELSA-2014-1654
https://lists.opensuse.org/opensuse-security-announce/2014-10/msg00005.html
https://lists.opensuse.org/opensuse-updates/2014-10/msg00020.html
https://lists.opensuse.org/opensuse-updates/2014-10/msg00021.html
https://rhn.redhat.com/errata/RHSA-2014-1397.html
https://rhn.redhat.com/errata/RHSA-2014-1654.html
https://rhn.redhat.com/errata/RHSA-2014-1671.html
https://secunia.com/advisories/61494
https://secunia.com/advisories/61720
https://secunia.com/advisories/61930
https://www.debian.org/security/2014/dsa-3040
https://www.mandriva.com/security/advisories?name=MDVSA-2015:130
https://www.openwall.com/lists/oss-security/2014/09/30/15
https://www.openwall.com/lists/oss-security/2014/10/03/1
https://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
https://www.rsyslog.com/remote-syslog-pri-vulnerability/
https://www.ubuntu.com/usn/USN-2381-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
