RHEL 6 : krb5-appl (RHSA-2011:0920)

Medium Nessus Plugin ID 55520

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

Updated krb5-appl packages that fix one security issue are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The krb5-appl packages provide Kerberos-aware telnet, ftp, rcp, rsh, and rlogin clients and servers. While these have been replaced by tools such as OpenSSH in most environments, they remain in use in others.

It was found that gssftp, a Kerberos-aware FTP server, did not properly drop privileges. A remote FTP user could use this flaw to gain unauthorized read or write access to files that are owned by the root group. (CVE-2011-1526)

Red Hat would like to thank the MIT Kerberos project for reporting this issue. Upstream acknowledges Tim Zingelman as the original reporter.

All krb5-appl users should upgrade to these updated packages, which contain a backported patch to correct this issue.

Solution

Update the affected krb5-appl-clients, krb5-appl-debuginfo and / or krb5-appl-servers packages.

See Also

https://access.redhat.com/security/cve/cve-2011-1526

http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-005.txt

https://access.redhat.com/errata/RHSA-2011:0920

Plugin Details

Severity: Medium

ID: 55520

File Name: redhat-RHSA-2011-0920.nasl

Version: 1.24

Type: local

Agent: unix

Published: 2011/07/06

Updated: 2019/10/25

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:krb5-appl-clients, p-cpe:/a:redhat:enterprise_linux:krb5-appl-debuginfo, p-cpe:/a:redhat:enterprise_linux:krb5-appl-servers, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:6.1

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Patch Publication Date: 2011/07/05

Vulnerability Publication Date: 2011/07/11

Reference Information

CVE: CVE-2011-1526

RHSA: 2011:0920