GLSA Bodhisattva
Joined: 23 Sep 2003 Posts: 7221 Location: Sat in front of my computer
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Posted: Tue Aug 10, 2004 11:10 pm Post subject: [ GLSA 200408-08 ] Cfengine: RSA Authentication Heap Corrupt |
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Gentoo Linux Security Advisory
Title: Cfengine: RSA Authentication Heap Corruption (GLSA 200408-08)
Severity: high
Exploitable: remote
Date: August 10, 2004
Updated: May 22, 2006
Bug(s): #59895
ID: 200408-08
Synopsis
Cfengine is vulnerable to a remote root exploit from clients in AllowConnectionsFrom.
Background
Cfengine is an agent/software robot and a high level policy language for building expert systems to administrate and configure large computer networks.
Affected Packages
Package: net-misc/cfengine
Vulnerable: <= 2.1.7
Unaffected: >= 2.1.8
Unaffected: < 2.0.0
Architectures: All supported architectures
Description
Two vulnerabilities have been found in cfservd. One is a buffer overflow in the AuthenticationDialogue function and the other is a failure to check the proper return value of the ReceiveTransaction function.
Impact
An attacker could use the buffer overflow to execute arbitrary code with the permissions of the user running cfservd, which is usually the root user. However, before such an attack could be mounted, the IP-based ACL would have to be bypassed. With the second vulnerability, an attacker could cause a denial of service attack.
Workaround
There is no known workaround at this time. All users are encouraged to upgrade to the latest available version of Cfengine. (It should be noted that disabling cfservd will work around this particular problem. However, in many cases, doing so will cripple your Cfengine setup. Upgrading is strongly recommended.)
Resolution
All Cfengine users should upgrade to the latest version: Code: | # emerge sync
# emerge -pv ">=net-misc/cfengine-2.1.8"
# emerge ">=net-misc/cfengine-2.1.8" |
References
Corelabs Advisory
CVE-2004-1701
CVE-2004-1702
Last edited by GLSA on Tue May 23, 2006 4:17 am; edited 2 times in total |
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