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Red Hat Enterprise Linux 5 RHSA-2014:0266-01 Moderate Sudo Threat

red hat
Calendar Grey March 10, 2014
Dist Redhat Esm H88
Ubuntu issues a significant patch for the OpenSSL library impacting server 20.04. Immediate update advised to mitigate vulnerabilities.
An updated sudo package that fixes one security issue is now available for Red Hat Enterprise Linux 5

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 https://access.redhat.com/site/articles/11258

Summary

The sudo (superuser do) utility allows system administrators to give certain users the ability to run commands as root.
A flaw was found in the way sudo handled its blacklist of environment variables. When the "env_reset" option was disabled, a user permitted to run certain commands via sudo could use this flaw to run such a command with one of the blacklisted environment variables set, allowing them to run an arbitrary command with the target user's privileges. (CVE-2014-0106)
Note: This issue does not affect the default configuration of the sudo package as shipped with Red Hat Enterprise Linux 5.
Red Hat would like to thank Todd C. Miller for reporting this issue. Upstream acknowledges Sebastien Macke as the original reporter.
All sudo users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.

Topics%20covered

Topics Covered

security advisory moderate security update security issue command execution Red Hat Enterprise Linux sudo

References

https://access.redhat.com/security/cve/CVE-2014-0106 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: sudo-1.7.2p1-29.el5_10.i386.rpm sudo-debuginfo-1.7.2p1-29.el5_10.i386.rpm
x86_64: sudo-1.7.2p1-29.el5_10.x86_64.rpm sudo-debuginfo-1.7.2p1-29.el5_10.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: sudo-1.7.2p1-29.el5_10.i386.rpm sudo-debuginfo-1.7.2p1-29.el5_10.i386.rpm
ia64: sudo-1.7.2p1-29.el5_10.ia64.rpm sudo-debuginfo-1.7.2p1-29.el5_10.ia64.rpm
ppc: sudo-1.7.2p1-29.el5_10.ppc.rpm sudo-debuginfo-1.7.2p1-29.el5_10.ppc.rpm
s390x: sudo-1.7.2p1-29.el5_10.s390x.rpm sudo-debuginfo-1.7.2p1-29.el5_10.s390x.rpm
x86_64: sudo-1.7.2p1-29.el5_10.x86_64.rpm sudo-debuginfo-1.7.2p1-29.el5_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/#package


Advisory ID: RHSA-2014:0266-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2014:0266.html
Issue date: 2014-03-10

Topic

An updated sudo package that fixes one security issue is now available forRed Hat Enterprise Linux 5.The Red Hat Security Response Team has rated this update as having Moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory moderate security update security issue command execution Red Hat Enterprise Linux sudo

Relevant Releases Architectures

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Bugs Fixed

1071780 - CVE-2014-0106 sudo: certain environment variables not sanitized when env_reset is disabled

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