CVE-2023-35945 is a high-severity denial-of-service vulnerability affecting Envoy and nghttp2, where specific HTTP/2 frame sequences can lead to memory leaks. An unauthenticated attacker can exploit this with low attack complexity, potentially causing memory exhaustion and service disruption. While the vulnerability has a CVSS score of 7.5, there is no evidence of active exploitation, public exploit code, or significant community discussion beyond a single media mention. Patches are available in Envoy versions 1.26.3, 1.25.8, 1.24.9, and 1.23.11.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.23.11CPE matchmatch criteria | cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | ||
>= 1.24.0, < 1.24.9CPE matchmatch criteria | cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | ||
>= 1.25.0, < 1.25.8CPE matchmatch criteria | cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | ||
>= 1.26.0, < 1.26.3CPE matchmatch criteria | cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | ||
< 1.55.1CPE matchmatch criteria | cpe:2.3:a:nghttp2:nghttp2:*:*:*:*:*:*:*:* |
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.