Out-of-Bounds Read Vulnerability in Caddy Web Server
CVE-2022-34037

7.5HIGH

Key Information:

Vendor

Caddyserver

Status
Caddy
Vendor
CVE Published:
22 July 2022

What is CVE-2022-34037?

An out-of-bounds read vulnerability has been identified in the rewrite function of the Caddy web server, specifically at /modules/caddyhttp/rewrite/rewrite.go. This flaw can be exploited by attackers via a specially crafted URI, potentially resulting in a Denial of Service (DoS) condition. The issue has been noted to arise when an administrator's misconfiguration leads to a malformed URI request, causing the server to respond with an empty reply instead of the expected HTTP response, which may disrupt web service availability.

References

https://github.com/caddyserver/caddy/issues/4775
https://github.com/caddyserver/caddy/issues/4775#issuecom...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.