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Gentoo GLSA-201006-21 High: UnrealIRCd Remote Access Threats

gentoo
Calendar Grey June 14, 2010
Dist Gentoo Esm H88
UnrealIRCd on Gentoo presents several security flaws that could jeopardize user accounts or facilitate unauthorized remote access. Update immediately.
Multiple vulnerabilities in UnrealIRCd might allow remote attackers to compromise the "unrealircd" account, or cause a Denial of Service.

Summary

Multiple vulnerabilities have been reported in UnrealIRCd: * The vendor reported a buffer overflow in the user authorization code.
* 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.

Topics%20covered

Topics Covered

security advisory denial of service gentoo buffer overflow remote access

Resolution

All UnrealIRCd users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-irc/unrealircd-3.2.8.1-r1"

References

[ 1 ] UnrealIRCd Security Advisory 20090413 [ 2 ] UnrealIRCd Security Advisory 20100612

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201006-21
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: High
Title: UnrealIRCd: Multiple vulnerabilities
Date: June 14, 2010
Bugs: #260806, #323691
ID: 201006-21

Topics%20covered

Topics Covered

security advisory denial of service gentoo buffer overflow remote access

Synopsis

Multiple vulnerabilities in UnrealIRCd might allow remote attackers to compromise the "unrealircd" account, or cause a Denial of Service.

Background

UnrealIRCd is an Internet Relay Chat (IRC) daemon.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-irc/unrealircd < 3.2.8.1-r1 >= 3.2.8.1-r1

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.

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