Improper input validation in GNU Patch
CVE-2018-1000156
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.053 (92.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.054 · newest: 0.053 · change: -0.001
Affected products
- GNU Patch — versions 2.7.6
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 7.0
- Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
- Red Hat Enterprise Linux Server — versions 6.0, 7.0
- Red Hat Enterprise Linux Server Aus — versions 6.4, 6.5, 6.6
- Red Hat Enterprise Linux Server Eus — versions 6.7, 7.3, 7.4
- Red Hat Enterprise Linux Server Tus — versions 6.6, 7.2, 7.3
- Red Hat Enterprise Linux Workstation — versions 6.0, 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- savannah.gnu.org/bugs/index.php (Vendor Advisory)
- lists.debian.org/debian-lts-announce/2018/04/msg00013.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/3624-2/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3624-1/ (vendor-advisory, Third Party Advisory)
- rachelbythebay.com/w/2018/04/05/bangpatch/ (Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2091 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2094 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2093 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:1200 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2095 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-1000156?
- CVE-2018-1000156 is a high-severity vulnerability in GNU Patch, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2018-04-06.
- How severe is CVE-2018-1000156?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2018-1000156 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.