CVE-2018-20834 describes an Arbitrary File Overwrite vulnerability in node-tar versions prior to 4.4.2 (excluding 2.2.2). This flaw allows an attacker to overwrite existing system files by crafting a malicious tarball containing a hardlink to an existing file followed by a plain file with the same name. The vulnerability carries a CVSS score of 7.5 (High), indicating a network-based attack with low complexity that can lead to high integrity impact without user interaction. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.2.2CPE matchmatch criteria | cpe:2.3:a:isaacs:tar:*:*:*:*:*:*:*:* | ||
>= 3.0.0, < 4.4.2CPE matchmatch criteria | cpe:2.3:a:isaacs:tar:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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.