id: GO-2022-0233
modules:
    - module: github.com/pires/go-proxyproto
      versions:
        - fixed: 0.6.1
      vulnerable_at: 0.5.0
      packages:
        - package: github.com/pires/go-proxyproto
          symbols:
            - Listener.Accept
summary: Resource exhaustion in github.com/pires/go-proxyproto
description: |-
    The PROXY protocol server does not impose a timeout on reading the header from
    new connections, allowing a malicious client to cause resource exhaustion and a
    denial of service by opening many connections and sending no data on them.

    v0.6.0 of the proxyproto package adds support for a user-defined header timeout.
    v0.6.1 adds a default timeout of 200ms and v0.6.2 increases the default timeout
    to 10s.
published: 2022-07-01T20:18:04Z
cves:
    - CVE-2021-23409
ghsas:
    - GHSA-xcf7-q56x-78gh
references:
    - fix: https://github.com/pires/go-proxyproto/pull/74
    - fix: https://github.com/pires/go-proxyproto/pull/74/commits/cdc63867da24fc609b727231f682670d0d1cd346
    - web: https://github.com/pires/go-proxyproto/issues/65