Issued:
2011-07-05
Updated:
2011-07-05

RHSA-2011:0920 - Important: krb5-appl security update

Synopsis

Important: krb5-appl security update

Type/Severity

Security Advisory Important

Topic

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.

Description

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 While these have been replaced by tools such as OpenSSH in most environments, they remain in use in others.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

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Virtual Storage Appliance (from RHUI)6.1x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.1x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.1i386
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for Power, big endian - Extended Update Support6.1ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support6.1s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.1x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.1i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • krb5-appl-debuginfo-1.0.1-2.el6_1.1.x86_64.rpm
  • krb5-appl-servers-1.0.1-2.el6_1.1.i686.rpm
  • krb5-appl-clients-1.0.1-2.el6_1.1.i686.rpm
  • krb5-appl-clients-1.0.1-2.el6_1.1.ppc64.rpm
  • krb5-appl-debuginfo-1.0.1-2.el6_1.1.i686.rpm
  • krb5-appl-servers-1.0.1-2.el6_1.1.ppc64.rpm
  • krb5-appl-debuginfo-1.0.1-2.el6_1.1.s390x.rpm
  • krb5-appl-clients-1.0.1-2.el6_1.1.s390x.rpm
  • krb5-appl-1.0.1-2.el6_1.1.src.rpm
  • krb5-appl-servers-1.0.1-2.el6_1.1.s390x.rpm
  • krb5-appl-clients-1.0.1-2.el6_1.1.x86_64.rpm
  • krb5-appl-servers-1.0.1-2.el6_1.1.x86_64.rpm
  • krb5-appl-debuginfo-1.0.1-2.el6_1.1.ppc64.rpm

Fixes

CVEs

References

Additional information