GLSA-201006-21 : UnrealIRCd: Multiple vulnerabilities

High Nessus Plugin ID 47016


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-201006-21 (UnrealIRCd: Multiple vulnerabilities)

Multiple vulnerabilities have been reported in UnrealIRCd:
The vendor reported a buffer overflow in the user authorization code (CVE-2009-4893).
The vendor reported that the distributed source code of UnrealIRCd was compromised and altered to include a system() call that could be called with arbitrary user input (CVE-2010-2075).
Impact :

A remote attacker could exploit these vulnerabilities to cause the execution of arbitrary commands with the privileges of the user running UnrealIRCd, or a Denial of Service condition. NOTE: By default UnrealIRCd on Gentoo is run with the privileges of the 'unrealircd' user.
Workaround :

There is no known workaround at this time.


All UnrealIRCd users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-irc/unrealircd-'

See Also

Plugin Details

Severity: High

ID: 47016

File Name: gentoo_GLSA-201006-21.nasl

Version: $Revision: 1.14 $

Type: local

Published: 2010/06/15

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:unrealircd, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2010/06/14

Exploitable With

CANVAS (White_Phosphorus)

Core Impact

Metasploit (UnrealIRCD Backdoor Command Execution)

Reference Information

CVE: CVE-2009-4893, CVE-2010-2075

BID: 40820

OSVDB: 65445, 65474

GLSA: 201006-21