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Red Hat 5 RHSA-2023:0456-01 Critical: Sudo Access Vulnerability

red hat
Calendar Grey February 26, 2010
Dist Redhat Esm H88
Ubuntu's critical update for OpenSSL tackles major vulnerabilities in version 1.1, reinforcing data encryption integrity.
An updated sudo package that fixes two security issues is now available for Red Hat Enterprise Linux 5. This update has been rated as having important security impact by the Red ...

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

Summary

The sudo (superuser do) utility allows system administrators to give certain users the ability to run commands as root.
A privilege escalation flaw was found in the way sudo handled the sudoedit pseudo-command. If a local user were authorized by the sudoers file to use this pseudo-command, they could possibly leverage this flaw to execute arbitrary code with the privileges of the root user. (CVE-2010-0426)
The sudo utility did not properly initialize supplementary groups when the "runas_default" option (in the sudoers file) was used. If a local user were authorized by the sudoers file to perform their sudo commands under the account specified with "runas_default", they would receive the root user's supplementary groups instead of those of the intended target user, giving them unintended privileges. (CVE-2010-0427)
Users of sudo should upgrade to this updated package, which contains backported patches to correct these issues.

Topics%20covered

Topics Covered

security advisory security update Red Hat sudo important security arbitrary code privilege escalations

References

https://access.redhat.com/security/cve/CVE-2010-0426 https://access.redhat.com/security/cve/CVE-2010-0427 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: sudo-1.6.9p17-6.el5_4.i386.rpm sudo-debuginfo-1.6.9p17-6.el5_4.i386.rpm
x86_64: sudo-1.6.9p17-6.el5_4.x86_64.rpm sudo-debuginfo-1.6.9p17-6.el5_4.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: sudo-1.6.9p17-6.el5_4.i386.rpm sudo-debuginfo-1.6.9p17-6.el5_4.i386.rpm
ia64: sudo-1.6.9p17-6.el5_4.ia64.rpm sudo-debuginfo-1.6.9p17-6.el5_4.ia64.rpm
ppc: sudo-1.6.9p17-6.el5_4.ppc.rpm sudo-debuginfo-1.6.9p17-6.el5_4.ppc.rpm
s390x: sudo-1.6.9p17-6.el5_4.s390x.rpm sudo-debuginfo-1.6.9p17-6.el5_4.s390x.rpm
x86_64: sudo-1.6.9p17-6.el5_4.x86_64.rpm sudo-debuginfo-1.6.9p17-6.el5_4.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2010:0122-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2010:0122.html
Issue date: 2010-02-26

Topic

An updated sudo package that fixes two security issues is now available for Red Hat Enterprise Linux 5.

This update has been rated as having important security impact by the Red Hat Security Response Team.

Topics%20covered

Topics Covered

security advisory security update Red Hat sudo important security arbitrary code privilege escalations

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

567337 - CVE-2010-0426 sudo: sudoedit option can possibly allow for arbitrary code execution

567622 - CVE-2010-0427 sudo: Fails to reset group permissions if runas_default set

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