CVE-2021-36159 is a critical vulnerability affecting libfetch versions prior to 2021-07-26, impacting products like apk-tools and xbps. It involves an out-of-bounds read in the FTP passive mode implementation due to improper handling of numeric strings, specifically when strtol parses address bytes without validating premature line termination. With a CVSS score of 9.1, this vulnerability is network-exploitable with low attack complexity, requiring no user interaction or privileges, and can lead to high confidentiality and availability impacts. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2021-07-26CPE matchmatch criteria | cpe:2.3:a:freebsd:libfetch:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.