CVE-2016-20013 describes a denial-of-service vulnerability in sha256crypt and sha512crypt versions through 0.6, where an attacker can cause high CPU consumption due to the password hashing algorithm's runtime scaling quadratically with password length. This high-severity vulnerability (CVSS 7.5) is network-exploitable with low attack complexity, requiring no user interaction or privileges, and primarily impacts availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 0.6CPE matchmatch criteria | cpe:2.3:a:sha256crypt_project:sha256crypt:*:*:*:*:*:*:*:* | ||
<= 0.6CPE matchmatch criteria | cpe:2.3:a:sha512crypt_project:sha512crypt:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
Remediation records are not available for this CVE.