CVE-2018-1000156 — HIGH (7.8)

Vulnerability Description

GNU Patch version 2.7.6 contains an input validation vulnerability when processing patch files, specifically the EDITOR_PROGRAM invocation (using ed) can result in code execution. This attack appear to be exploitable via a patch file processed via the patch utility. This is similar to FreeBSD's CVE-2015-1418 however although they share a common ancestry the code bases have diverged over time.

CVSS Score

7.8

HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Gnu	Patch	2.7.6
Canonical	Ubuntu Linux	12.04
Debian	Debian Linux	7.0
Redhat	Enterprise Linux Desktop	6.0
Redhat	Enterprise Linux Server	6.0
Redhat	Enterprise Linux Server Aus	6.4
Redhat	Enterprise Linux Server Eus	6.7
Redhat	Enterprise Linux Server Tus	6.6
Redhat	Enterprise Linux Workstation	6.0

Related Weaknesses (CWE)

CWE-20

References

http://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Director
http://rachelbythebay.com/w/2018/04/05/bangpatch/Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1199Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1200Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2091Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2092Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2093Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2094Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2095Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2096Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2097Third Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=894667#19Issue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00013.htmlMailing ListThird Party Advisory
https://savannah.gnu.org/bugs/index.php?53566Vendor Advisory
https://seclists.org/bugtraq/2019/Aug/29

FAQ

What is CVE-2018-1000156?

CVE-2018-1000156 is a vulnerability with a CVSS score of 7.8 (HIGH). GNU Patch version 2.7.6 contains an input validation vulnerability when processing patch files, specifically the EDITOR_PROGRAM invocation (using ed) can result in code execution. This attack appear t...

How severe is CVE-2018-1000156?

CVE-2018-1000156 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-1000156?

Check the references section above for vendor advisories and patch information. Affected products include: Gnu Patch, Canonical Ubuntu Linux, Debian Debian Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server.