Vulnerabilities > CVE-2004-1702 - Remote Denial Of Service vulnerability in GNU CFEngine AuthenticationDialogue
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
PARTIAL Summary
The AuthenticationDialogue function in cfservd for Cfengine 2.0.0 to 2.1.7p1 does not properly check the return value of the ReceiveTransaction function, which leads to a failed malloc call and triggers to a null dereference, which allows remote attackers to cause a denial of service (crash).
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 20 |
Nessus
NASL family Gain a shell remotely NASL id CFENGINE_AUTHDIAG.NASL description Cfengine cfservd is reported prone to a remote heap-based buffer overrun vulnerability. The vulnerability presents itself in the cfengine cfservd AuthenticationDialogue() function. The issue exists due to a lack of sufficient boundary checks performed on challenge data that is received from a client. In addition, cfengine cfservd is reported prone to a remote denial of service vulnerability. The vulnerability presents itself in the cfengine cfservd AuthenticationDialogue() function which is responsible for processing SAUTH commands and also performing RSA based authentication. The vulnerability presents itself because return values for several statements within the AuthenticationDialogue() function are not checked. last seen 2020-06-01 modified 2020-06-02 plugin id 14314 published 2004-08-20 reporter This script is Copyright (C) 2004-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/14314 title Cfengine AuthenticationDialogue() Function Remote Overflow NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-200408-08.NASL description The remote host is affected by the vulnerability described in GLSA-200408-08 (Cfengine: RSA Authentication Heap Corruption) 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.) last seen 2020-06-01 modified 2020-06-02 plugin id 14564 published 2004-08-30 reporter This script is Copyright (C) 2004-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/14564 title GLSA-200408-08 : Cfengine: RSA Authentication Heap Corruption
References
- http://marc.info/?l=bugtraq&m=109208394910086&w=2
- http://secunia.com/advisories/12251
- http://security.gentoo.org/glsa/glsa-200408-08.xml
- http://www.coresecurity.com/common/showdoc.php?idx=387&idxseccion=10
- http://www.securityfocus.com/bid/10900
- https://exchange.xforce.ibmcloud.com/vulnerabilities/16937