CVE-2022-34037: caddyserver caddy Out-of-bounds Read

Vulnerability summary

CVE-2022-34037 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in caddyserver caddy. EPSS estimates a 1.18% chance of exploitation in the next 30 days, higher than 67.1% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 22-07-2022
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

An out-of-bounds read in the rewrite function at /modules/caddyhttp/rewrite/rewrite.go in Caddy v2.5.1 allows attackers to cause a Denial of Service (DoS) via a crafted URI. Note: This has been disputed as a bug, not a security vulnerability, in the Caddy web server that emerged when an administrator's bad configuration containing a malformed request URI caused the server to return an empty reply instead of a valid HTTP response to the client.

• CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.