CVE-2024-27355 is a denial-of-service vulnerability affecting phpseclib versions 1.x before 1.0.23, 2.x before 2.0.47, and 3.x before 3.0.36, including Debian distributions. An unauthenticated attacker can exploit this by providing a specially crafted certificate with a malicious sub-identifier in the ASN.1 object identifier, leading to high CPU consumption during decodeOID and causing a denial of service. With a CVSS score of 7.5 (HIGH), this vulnerability has a low attack complexity and requires no user interaction. 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 |
|---|---|---|---|
>= 1.0.0, < 1.0.23CPE matchmatch criteria | cpe:2.3:a:phpseclib:phpseclib:*:*:*:*:*:*:*:* | ||
>= 2.0.0, < 2.0.47CPE matchmatch criteria | cpe:2.3:a:phpseclib:phpseclib:*:*:*:*:*:*:*:* | ||
>= 3.0.0, < 3.0.36CPE matchmatch criteria | cpe:2.3:a:phpseclib:phpseclib:*:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
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.