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Red Hat Security Advisory
Synopsis: Important: krb5-appl security update
Advisory ID: RHSA-2020:1349-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1349
Issue date: 2020-04-07
CVE Names: CVE-2020-10188
=====================================================================
1. Summary:
An update for krb5-appl is now available for Red Hat Enterprise Linux 6.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Desktop (v. 6) – i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) – x86_64
Red Hat Enterprise Linux Server (v. 6) – i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) – i386, x86_64
3. Description:
The krb5-appl packages contain Kerberos-aware versions of telnet, ftp, rsh,
and rlogin clients and servers. Kerberos is a network authentication system
which allows clients and servers to authenticate to each other using
symmetric encryption and trusted third-party, the Key Distribution Center
(KDC).
Security Fix(es):
* telnet-server: no bounds checks in nextitem() function allows to remotely
execute arbitrary code (CVE-2020-10188)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1811673 – CVE-2020-10188 telnet-server: no bounds checks in nextitem() function allows to remotely execute arbitrary code
6. Package List:
Red Hat Enterprise Linux Desktop (v. 6):
Source:
krb5-appl-1.0.1-10.el6_10.src.rpm
i386:
krb5-appl-clients-1.0.1-10.el6_10.i686.rpm
krb5-appl-debuginfo-1.0.1-10.el6_10.i686.rpm
krb5-appl-servers-1.0.1-10.el6_10.i686.rpm
x86_64:
krb5-appl-clients-1.0.1-10.el6_10.x86_64.rpm
krb5-appl-debuginfo-1.0.1-10.el6_10.x86_64.rpm
krb5-appl-servers-1.0.1-10.el6_10.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
krb5-appl-1.0.1-10.el6_10.src.rpm
x86_64:
krb5-appl-clients-1.0.1-10.el6_10.x86_64.rpm
krb5-appl-debuginfo-1.0.1-10.el6_10.x86_64.rpm
krb5-appl-servers-1.0.1-10.el6_10.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
krb5-appl-1.0.1-10.el6_10.src.rpm
i386:
krb5-appl-clients-1.0.1-10.el6_10.i686.rpm
krb5-appl-debuginfo-1.0.1-10.el6_10.i686.rpm
krb5-appl-servers-1.0.1-10.el6_10.i686.rpm
ppc64:
krb5-appl-clients-1.0.1-10.el6_10.ppc64.rpm
krb5-appl-debuginfo-1.0.1-10.el6_10.ppc64.rpm
krb5-appl-servers-1.0.1-10.el6_10.ppc64.rpm
s390x:
krb5-appl-clients-1.0.1-10.el6_10.s390x.rpm
krb5-appl-debuginfo-1.0.1-10.el6_10.s390x.rpm
krb5-appl-servers-1.0.1-10.el6_10.s390x.rpm
x86_64:
krb5-appl-clients-1.0.1-10.el6_10.x86_64.rpm
krb5-appl-debuginfo-1.0.1-10.el6_10.x86_64.rpm
krb5-appl-servers-1.0.1-10.el6_10.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
krb5-appl-1.0.1-10.el6_10.src.rpm
i386:
krb5-appl-clients-1.0.1-10.el6_10.i686.rpm
krb5-appl-debuginfo-1.0.1-10.el6_10.i686.rpm
krb5-appl-servers-1.0.1-10.el6_10.i686.rpm
x86_64:
krb5-appl-clients-1.0.1-10.el6_10.x86_64.rpm
krb5-appl-debuginfo-1.0.1-10.el6_10.x86_64.rpm
krb5-appl-servers-1.0.1-10.el6_10.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2020-10188
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2020 Red Hat, Inc.
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