CVE-2021-23351 is a Denial of Service (DoS) vulnerability affecting github.com/pires/go-proxyproto versions prior to 0.5.0, specifically impacting Fedora and go-proxyproto projects. An attacker can exploit this by sending a malformed V1 header without a newline, causing the server to exhaust memory. Rated Medium (CVSS 4.9), the attack requires high privileges (PR:H) but has low attack complexity (AC:L), leading to high availability impact (A:H). There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.5.0CPE matchmatch criteria | cpe:2.3:a:go-proxyproto_project:go-proxyproto:*:*:*:*:*:*:*:* | ||
33CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | ||
34CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:H/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, 0.0 Mastodon, and 0.1 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.