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Red Hat Enterprise Linux: RHSA-2019-3757-01 Important Command Injection

red hat
Calendar Grey November 6, 2019
Dist Redhat Esm H88
An urgent caution notice for Red Hat Enterprise Linux patch release, targeting vulnerabilities related to shell command exploitation.
An update for patch is now available for Red Hat Enterprise Linux 7.5 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Impo...

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 patch program applies diff files to originals. The diff command is used to compare an original to a changed file. Diff lists the changes made to the file. A person who has the original file can then use the patch command with the diff file to add the changes to their original file (patching the file).
Security Fix(es):
* patch: do_ed_script in pch.c does not block strings beginning with a ! character (CVE-2018-20969)
* patch: OS shell command injection when processing crafted patch files (CVE-2019-13638)
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.

Topics%20covered

Topics Covered

security advisory patch important security impact red hat enterprise command injection shell command

References

https://access.redhat.com/security/cve/CVE-2018-20969 https://access.redhat.com/security/cve/CVE-2019-13638 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.5):
Source: patch-2.7.1-11.el7_5.src.rpm
x86_64: patch-2.7.1-11.el7_5.x86_64.rpm patch-debuginfo-2.7.1-11.el7_5.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 7.5):
Source: patch-2.7.1-11.el7_5.src.rpm
ppc64: patch-2.7.1-11.el7_5.ppc64.rpm patch-debuginfo-2.7.1-11.el7_5.ppc64.rpm
ppc64le: patch-2.7.1-11.el7_5.ppc64le.rpm patch-debuginfo-2.7.1-11.el7_5.ppc64le.rpm
s390x: patch-2.7.1-11.el7_5.s390x.rpm patch-debuginfo-2.7.1-11.el7_5.s390x.rpm
x86_64: patch-2.7.1-11.el7_5.x86_64.rpm patch-debuginfo-2.7.1-11.el7_5.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-2019:3757-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:3757
Issue date: 2019-11-06

Topic

An update for patch is now available for Red Hat Enterprise Linux 7.5 Extended Update Support.

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.

Topics%20covered

Topics Covered

security advisory patch important security impact red hat enterprise command injection shell command

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.5) - ppc64, ppc64le, s390x, x86_64

Bugs Fixed

1733916 - CVE-2019-13638 patch: OS shell command injection when processing crafted patch files

1746672 - CVE-2018-20969 patch: do_ed_script in pch.c does not block strings beginning with a ! character

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