Synopsis

Important: patch security update

Type/Severity

Security Advisory: Important

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.

Description

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.

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

Affected Products

• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.5 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.5 s390x
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.5 ppc64
• Red Hat Enterprise Linux EUS Compute Node 7.5 x86_64
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.5 ppc64le

Fixes

• BZ - 1733916 - CVE-2019-13638 patch: OS shell command injection when processing crafted patch files
• BZ - 1746672 - CVE-2018-20969 patch: do_ed_script in pch.c does not block strings beginning with a ! character

CVEs

• CVE-2018-20969
• CVE-2019-13638

References

• https://access.redhat.com/security/updates/classification/#important

Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.5

SRPM
patch-2.7.1-11.el7_5.src.rpm	SHA-256: 261450e79ceee869565ba03cb0608c3f585a081dbcfcf864a1fba35a77c5d38b
x86_64
patch-2.7.1-11.el7_5.x86_64.rpm	SHA-256: 93e052905001cea62eb4ff4b2b29c16b0ccd200f29ec69a85f425bf116718dac
patch-debuginfo-2.7.1-11.el7_5.x86_64.rpm	SHA-256: 2f2ddd05e5197b0b849f78b3e9853cba7174b6ad111984b201b5ce643689b1ae

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.5

SRPM
patch-2.7.1-11.el7_5.src.rpm	SHA-256: 261450e79ceee869565ba03cb0608c3f585a081dbcfcf864a1fba35a77c5d38b
s390x
patch-2.7.1-11.el7_5.s390x.rpm	SHA-256: b985d4fdc4ddb9a08ad246ac7531eb20454c4662ed3d0b3a9aea3f361b2a52e6
patch-debuginfo-2.7.1-11.el7_5.s390x.rpm	SHA-256: 4536b8a016b07d991d8da046f973703e5e397a6c0509251110665513340e2422

Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.5

SRPM
patch-2.7.1-11.el7_5.src.rpm	SHA-256: 261450e79ceee869565ba03cb0608c3f585a081dbcfcf864a1fba35a77c5d38b
ppc64
patch-2.7.1-11.el7_5.ppc64.rpm	SHA-256: 15867ec3753781e653797b8bd579300b03495b1a11506e8bc17417557793ef6f
patch-debuginfo-2.7.1-11.el7_5.ppc64.rpm	SHA-256: 80ec2bf2d8d8255d7d9badf8aba7823fd1ec0388a14663b850fed3b402d4712a

Red Hat Enterprise Linux EUS Compute Node 7.5

SRPM
patch-2.7.1-11.el7_5.src.rpm	SHA-256: 261450e79ceee869565ba03cb0608c3f585a081dbcfcf864a1fba35a77c5d38b
x86_64
patch-2.7.1-11.el7_5.x86_64.rpm	SHA-256: 93e052905001cea62eb4ff4b2b29c16b0ccd200f29ec69a85f425bf116718dac
patch-debuginfo-2.7.1-11.el7_5.x86_64.rpm	SHA-256: 2f2ddd05e5197b0b849f78b3e9853cba7174b6ad111984b201b5ce643689b1ae

Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.5

SRPM
patch-2.7.1-11.el7_5.src.rpm	SHA-256: 261450e79ceee869565ba03cb0608c3f585a081dbcfcf864a1fba35a77c5d38b
ppc64le
patch-2.7.1-11.el7_5.ppc64le.rpm	SHA-256: 208fae46f46693b0c5ed68d5b36008fdb5e31e394775a974c867dc6f3e68f6aa
patch-debuginfo-2.7.1-11.el7_5.ppc64le.rpm	SHA-256: ec0dc1f27d265a9d9f7ca4c0cbcf84d32f60eab12d61a8a96f5432ddef94e2f3