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Ubuntu 4.10 / 5.04 : krb4, krb5 vulnerabilities (USN-224-1)

high Nessus Plugin ID 20767

Synopsis

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

Description

Gael Delalleau discovered a buffer overflow in the env_opt_add() function of the Kerberos 4 and 5 telnet clients. By sending specially crafted replies, a malicious telnet server could exploit this to execute arbitrary code with the privileges of the user running the telnet client. (CVE-2005-0468)

Gael Delalleau discovered a buffer overflow in the handling of the LINEMODE suboptions in the telnet clients of Kerberos 4 and 5. By sending a specially constructed reply containing a large number of SLC (Set Local Character) commands, a remote attacker (i. e. a malicious telnet server) could execute arbitrary commands with the privileges of the user running the telnet client. (CVE-2005-0469)

Daniel Wachdorf discovered two remote vulnerabilities in the Key Distribution Center of Kerberos 5 (krb5-kdc). By sending certain TCP connection requests, a remote attacker could trigger a double-freeing of memory, which led to memory corruption and a crash of the KDC server. (CVE-2005-1174). Under rare circumstances the same type of TCP connection requests could also trigger a buffer overflow that could be exploited to run arbitrary code with the privileges of the KDC server.
(CVE-2005-1175)

Magnus Hagander discovered that the krb5_recvauth() function attempted to free previously freed memory in some situations. A remote attacker could possibly exploit this to run arbitrary code with the privileges of the program that called this function. Most imporantly, this affects the following daemons: kpropd (from the krb5-kdc package), klogind, and kshd (both from the krb5-rsh-server package).
(CVE-2005-1689)

Please note that these packages are not officially supported by Ubuntu (they are in the 'universe' component of the archive).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 20767

File Name: ubuntu_USN-224-1.nasl

Version: 1.17

Type: local

Agent: unix

Published: 1/21/2006

Updated: 1/19/2021

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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: p-cpe:/a:canonical:ubuntu_linux:kerberos4kth-clients, p-cpe:/a:canonical:ubuntu_linux:kerberos4kth-clients-x, p-cpe:/a:canonical:ubuntu_linux:kerberos4kth-dev, p-cpe:/a:canonical:ubuntu_linux:kerberos4kth-docs, p-cpe:/a:canonical:ubuntu_linux:kerberos4kth-kdc, p-cpe:/a:canonical:ubuntu_linux:kerberos4kth-kip, p-cpe:/a:canonical:ubuntu_linux:kerberos4kth-servers, p-cpe:/a:canonical:ubuntu_linux:kerberos4kth-servers-x, p-cpe:/a:canonical:ubuntu_linux:kerberos4kth-services, p-cpe:/a:canonical:ubuntu_linux:kerberos4kth-user, p-cpe:/a:canonical:ubuntu_linux:kerberos4kth-x11, p-cpe:/a:canonical:ubuntu_linux:kerberos4kth1, p-cpe:/a:canonical:ubuntu_linux:krb5-admin-server, p-cpe:/a:canonical:ubuntu_linux:krb5-clients, p-cpe:/a:canonical:ubuntu_linux:krb5-doc, p-cpe:/a:canonical:ubuntu_linux:krb5-ftpd, p-cpe:/a:canonical:ubuntu_linux:krb5-kdc, p-cpe:/a:canonical:ubuntu_linux:krb5-rsh-server, p-cpe:/a:canonical:ubuntu_linux:krb5-telnetd, p-cpe:/a:canonical:ubuntu_linux:krb5-user, p-cpe:/a:canonical:ubuntu_linux:libkadm1-kerberos4kth, p-cpe:/a:canonical:ubuntu_linux:libkadm55, p-cpe:/a:canonical:ubuntu_linux:libkafs0-kerberos4kth, p-cpe:/a:canonical:ubuntu_linux:libkdb-1-kerberos4kth, p-cpe:/a:canonical:ubuntu_linux:libkrb-1-kerberos4kth, p-cpe:/a:canonical:ubuntu_linux:libkrb5-dev, p-cpe:/a:canonical:ubuntu_linux:libkrb53, p-cpe:/a:canonical:ubuntu_linux:libkthacl1-kerberos4kth, p-cpe:/a:canonical:ubuntu_linux:libotp0-kerberos4kth, p-cpe:/a:canonical:ubuntu_linux:libroken16-kerberos4kth, p-cpe:/a:canonical:ubuntu_linux:libsl0-kerberos4kth, p-cpe:/a:canonical:ubuntu_linux:libss0-kerberos4kth, cpe:/o:canonical:ubuntu_linux:4.10, cpe:/o:canonical:ubuntu_linux:5.04

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Patch Publication Date: 12/6/2005

Reference Information

CVE: CVE-2005-0468, CVE-2005-0469, CVE-2005-1174, CVE-2005-1175, CVE-2005-1689

CWE: 119

USN: 224-1