CVE-2017-18205 describes a NULL pointer dereference vulnerability in zsh versions prior to 5.4, specifically when operating in sh compatibility mode and the 'cd' command is invoked without arguments while the HOME environment variable is unset. This flaw carries a high severity CVSS score of 8.1, indicating a critical risk due to its network-exploitable nature, high impact on confidentiality, integrity, and availability, and low attack complexity. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.4CPE matchmatch criteria | cpe:2.3:a:zsh_project:zsh:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.