Detections
Analytics
Debian DSA-273-1 : krb4 - Cryptographic weakness
high Nessus Plugin ID 15110
Synopsis
The remote Debian host is missing a security-related update.Description
A cryptographic weakness in version 4 of the Kerberos protocol allows an attacker to use a chosen-plaintext attack to impersonate any principal in a realm. Additional cryptographic weaknesses in the krb4 implementation permit the use of cut-and-paste attacks to fabricate krb4 tickets for unauthorized client principals if triple-DES keys are used to key krb4 services. These attacks can subvert a site's entire Kerberos authentication infrastructure.Solution
Upgrade the krb4 packages immediately.For the stable distribution (woody) this problem has been fixed in version 1.1-8-2.3.
For the old stable distribution (potato) this problem has been fixed in version 1.0-2.3.
See Also
Plugin Details
Severity: High
ID: 15110
File Name: debian_DSA-273.nasl
Version: 1.22
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 9/29/2004
Updated: 1/4/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.2
CVSS v2
Risk Factor: High
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Vulnerability Information
CPE: cpe:/o:debian:debian_linux:3.0, p-cpe:/a:debian:debian_linux:krb4, cpe:/o:debian:debian_linux:2.2
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Patch Publication Date: 3/28/2003
Reference Information
CVE: CVE-2003-0138, CVE-2003-0139