CVE-2018-1000156: Input Validation
First published: Fri Apr 06 2018(Updated: )
GNU patch does not properly sanitize patch files allowing for malicious patches to pass arbitrary shell commands to ed. An attacker could exploit this by tricking a user into applying malicious patches with the patch command.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/patch | 2.7.6-7 | |
| GNU Patch | =2.7.6 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =17.10 | |
| Debian | =7.0 | |
| Red Hat Enterprise Linux Desktop | =6.0 | |
| Red Hat Enterprise Linux Desktop | =7.0 | |
| Red Hat Enterprise Linux Server | =6.0 | |
| Red Hat Enterprise Linux Server | =7.0 | |
| Red Hat Enterprise Linux Server | =6.4 | |
| Red Hat Enterprise Linux Server | =6.5 | |
| Red Hat Enterprise Linux Server | =6.6 | |
| Red Hat Enterprise Linux Server | =7.2 | |
| Red Hat Enterprise Linux Server | =7.3 | |
| Red Hat Enterprise Linux Server | =7.4 | |
| Red Hat Enterprise Linux Server | =7.6 | |
| Red Hat Enterprise Linux Server | =6.7 | |
| Red Hat Enterprise Linux Server | =7.3 | |
| Red Hat Enterprise Linux Server | =7.4 | |
| Red Hat Enterprise Linux Server | =7.5 | |
| Red Hat Enterprise Linux Server | =7.6 | |
| Red Hat Enterprise Linux Server | =6.6 | |
| Red Hat Enterprise Linux Server | =7.2 | |
| Red Hat Enterprise Linux Server | =7.3 | |
| Red Hat Enterprise Linux Server | =7.4 | |
| Red Hat Enterprise Linux Server | =7.6 | |
| Red Hat Enterprise Linux Workstation | =6.0 | |
| Red Hat Enterprise Linux Workstation | =7.0 |
Remedy
http://git.savannah.gnu.org/cgit/patch.git/commit/?id=123eaff0d5d1aebe128295959435b9ca5909c26d
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Reference Links
- http://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Directory-Traversal.html
- http://rachelbythebay.com/w/2018/04/05/bangpatch/
- https://access.redhat.com/errata/RHSA-2018:1199
- https://access.redhat.com/errata/RHSA-2018:1200
- https://access.redhat.com/errata/RHSA-2018:2091
- https://access.redhat.com/errata/RHSA-2018:2092
- https://access.redhat.com/errata/RHSA-2018:2093
- https://access.redhat.com/errata/RHSA-2018:2094
- https://access.redhat.com/errata/RHSA-2018:2095
- https://access.redhat.com/errata/RHSA-2018:2096
- https://access.redhat.com/errata/RHSA-2018:2097
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=894667#19
- https://lists.debian.org/debian-lts-announce/2018/04/msg00013.html
- https://savannah.gnu.org/bugs/index.php?53566
- https://seclists.org/bugtraq/2019/Aug/29
- https://seclists.org/bugtraq/2019/Jul/54
- https://security.gentoo.org/glsa/201904-17
- https://twitter.com/kurtseifried/status/982028968877436928
- https://usn.ubuntu.com/3624-1/
- https://usn.ubuntu.com/3624-2/
- https://launchpad.net/bugs/cve/CVE-2018-1000156
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1564327
- https://savannah.gnu.org/bugs/?53566
- http://git.savannah.gnu.org/cgit/patch.git/commit/?id=123eaff0d5d1aebe128295959435b9ca5909c26d
- https://bugzilla.redhat.com/show_bug.cgi?id=1564326
- https://rachelbythebay.com/w/2018/04/05/bangpatch/
- https://www.freebsd.org/security/advisories/FreeBSD-SA-15:18.bsdpatch.asc
- https://ftp.openbsd.org/pub/OpenBSD/patches/5.7/common/013_patch.patch.sig
- https://savannah.gnu.org/bugs/?53820
- https://bugzilla.suse.com/show_bug.cgi?id=1092500
- https://bugs.debian.org/933140
- http://git.savannah.gnu.org/cgit/patch.git/commit/?id=19599883ffb6a450d2884f081f8ecf68edbed7ee
- http://git.savannah.gnu.org/cgit/patch.git/commit/?id=369dcccdfa6336e5a873d6d63705cfbe04c55727
- https://security-tracker.debian.org/tracker/CVE-2018-1000156
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000156
- https://nvd.nist.gov/vuln/detail/CVE-2018-1000156
- https://ubuntu.com/security/CVE-2018-1000156
Frequently Asked Questions
What is the severity of CVE-2018-1000156?
CVE-2018-1000156 is considered a high severity vulnerability due to its potential to allow arbitrary code execution.
How do I fix CVE-2018-1000156?
To fix CVE-2018-1000156, update GNU Patch to version 2.7.6-7 or later.
Which versions of GNU Patch are affected by CVE-2018-1000156?
GNU Patch version 2.7.6 is affected by CVE-2018-1000156.
How can an attacker exploit CVE-2018-1000156?
An attacker can exploit CVE-2018-1000156 by tricking a user into applying a malicious patch file.
What systems are vulnerable to CVE-2018-1000156?
Systems using GNU Patch version 2.7.6, including Debian and various versions of Ubuntu and Red Hat Enterprise Linux, are vulnerable to CVE-2018-1000156.
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