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Red Hat Enterprise Linux 5: RHSA-2017-1381-01 Important: Sudo Escalation

red hat
Calendar Grey May 30, 2017
Scroller Redhat
Crucial yum upgrade for CentOS addresses critical security flaws that allow for unauthorized access. Essential for maintaining system integrity.
An update for sudo is now available for Red Hat Enterprise Linux 5 Extended Lifecycle Support

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

Summary

The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* A flaw was found in the way sudo parsed tty information from the process status file in the proc filesystem. A local user with privileges to execute commands via sudo could use this flaw to escalate their privileges to root. (CVE-2017-1000367)
Red Hat would like to thank Qualys Security for reporting this issue.

Topics%20covered

Topics Covered

security advisory privilege escalation Red Hat Enterprise Linux important sudo

References

https://access.redhat.com/security/cve/CVE-2017-1000367 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server (v. 5 ELS):
Source: sudo-1.7.2p1-30.el5_11.src.rpm
i386: sudo-1.7.2p1-30.el5_11.i386.rpm sudo-debuginfo-1.7.2p1-30.el5_11.i386.rpm
s390x: sudo-1.7.2p1-30.el5_11.s390x.rpm sudo-debuginfo-1.7.2p1-30.el5_11.s390x.rpm
x86_64: sudo-1.7.2p1-30.el5_11.x86_64.rpm sudo-debuginfo-1.7.2p1-30.el5_11.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2017:1381-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1381
Issue date: 2017-05-30

Topic

An update for sudo is now available for Red Hat Enterprise Linux 5 ExtendedLifecycle Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory privilege escalation Red Hat Enterprise Linux important sudo

Relevant Releases Architectures

Red Hat Enterprise Linux Server (v. 5 ELS) - i386, s390x, x86_64

Bugs Fixed

1453074 - CVE-2017-1000367 sudo: Privilege escalation in via improper get_process_ttyname() parsing

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