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CVE

CVE-2018-1000156

GNU Patch version 2.7.6 contains an input validation vulnerability when processing patch files, specifically the EDITOR_

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.

HIGH · CVSS 7.8 EPSS 0.36762
Act now
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 3% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

9
gnu patchall versions
canonical ubuntu linuxall versions
debian linuxall versions
redhat enterprise linux desktopall versions
redhat enterprise linux serverall versions
redhat enterprise linux server ausall versions
redhat enterprise linux server eusall versions
redhat enterprise linux server tusall versions
⚠

Public Exploits & PoCs

1
pocpacketstormsecurity.com · GNU-patch-Command-Injection-Directory-Traversal.htmlpacketstormsecurity.com
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 Apr 2018 · 01:29 PM
CVSS VectorCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

16
suse-csafopenSUSE-SU-2024:11151-1
suse-csafopenSUSE-SU-2024:11372-1
msrcCVE-2018-1000156
suse-csafSUSE-SU-2018:1162-1
suse-csafSUSE-SU-2018:1128-1
🔗

References & Sources

11
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://rachelbythebay.com/w/2018/04/05/bangpatch/Third 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
https://seclists.org/bugtraq/2019/Jul/54
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