CVE-2023-0464 is a denial-of-service vulnerability affecting all supported versions of OpenSSL. It stems from the verification of X.509 certificate chains with policy constraints, which, if enabled, can be maliciously crafted to consume excessive computational resources. This vulnerability has a CVSS score of 7.5 (HIGH), indicating it can be exploited remotely with low attack complexity, leading to a complete loss of availability. While policy processing is disabled by default, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion, despite some media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.0.2, < 1.0.2zhCPE matchmatch criteria | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* | ||
>= 1.1.1, < 1.1.1uCPE matchmatch criteria | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* | ||
>= 3.0.0, < 3.0.9CPE matchmatch criteria | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* | ||
>= 3.1.0, < 3.1.1CPE matchmatch criteria | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* |
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.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.