MEDIUM
CVE-2018-1071
CWE-121Published: March 9, 2018· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the exec.c:hashcmd() function. A local attacker could exploit this to cause a denial of service.
Technical Analysis
CVE-2018-1071 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
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://usn.ubuntu.com/3608-1/
ADVISORYhttps://usn.ubuntu.com/3608-1/
All References (14)
→
http://www.securityfocus.com/bid/103359Third Party Advisory · VDB Entry
→
https://access.redhat.com/errata/RHSA-2018:3073Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1553531Issue Tracking · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/03/msg00038.htmlMailing List · Third Party Advisory
→
https://security.gentoo.org/glsa/201805-10Third Party Advisory
→
https://usn.ubuntu.com/3608-1/Third Party Advisory
→
http://www.securityfocus.com/bid/103359Third Party Advisory · VDB Entry
→
https://access.redhat.com/errata/RHSA-2018:3073Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1553531Issue Tracking · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/03/msg00038.htmlMailing List · Third Party Advisory
→
https://security.gentoo.org/glsa/201805-10Third Party Advisory
→
https://usn.ubuntu.com/3608-1/Third Party Advisory
Quick Facts
CVE IDCVE-2018-1071
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-121
CISA KEVNo
Affected4 vendor(s)
PublishedMar 9, 2018
Related CVEs (CWE-121)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-1071 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.COM. CVE data is provided under the NVD usage policy.