HOMEVULNERABILITIESCVE-2018-1000637
HIGH

CVE-2018-1000637

CWE-119Published: August 20, 2018· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

zutils version prior to version 1.8-pre2 contains a Buffer Overflow vulnerability in zcat that can result in Potential denial of service or arbitrary code execution. This attack appear to be exploitable via the victim openning a crafted compressed file. This vulnerability appears to have been fixed in 1.8-pre2.

NVD Source

Technical Analysis

CVE-2018-1000637 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

Debian1 product(s)
debian linux
nongnu1 product(s)
zutils
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://bugs.debian.org/904819
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/09/msg00016.html
ADVISORYhttps://lists.nongnu.org/archive/html/zutils-bug/2018-08/msg00000.html
ADVISORYhttps://bugs.debian.org/904819
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/09/msg00016.html
ADVISORYhttps://lists.nongnu.org/archive/html/zutils-bug/2018-08/msg00000.html

All References (6)

→
https://bugs.debian.org/904819Issue Tracking · Mailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/09/msg00016.htmlMailing List · Third Party Advisory
→
https://lists.nongnu.org/archive/html/zutils-bug/2018-08/msg00000.htmlMailing List · Third Party Advisory
→
https://bugs.debian.org/904819Issue Tracking · Mailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/09/msg00016.htmlMailing List · Third Party Advisory
→
https://lists.nongnu.org/archive/html/zutils-bug/2018-08/msg00000.htmlMailing List · Third Party Advisory

Quick Facts

CVE IDCVE-2018-1000637
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-119
CISA KEVNo
Affected2 vendor(s)
PublishedAug 20, 2018

Related CVEs (CWE-119)

CVE-2024-25029
10.0
CVE-2021-21951
10.0
CVE-2010-3187
10.0
CVE-2020-11896
10.0
CVE-2021-21950
10.0
CVE-2025-1866
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-1000637 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2018-1000637·NVD