CVE-2022-32205

Description

A malicious server can serve excessive amounts of `Set-Cookie:` headers in a HTTP response to curl and curl < 7.84.0 stores all of them. A sufficiently large amount of (big) cookies make subsequent HTTP requests to this, or other servers to which the cookies match, create requests that become larger than the threshold that curl uses internally to avoid sending crazy large requests (1048576 bytes) and instead returns an error.This denial state might remain for as long as the same cookies are kept, match and haven't expired. Due to cookie matching rules, a server on `foo.example.com` can set cookies that also would match for `bar.example.com`, making it it possible for a "sister server" to effectively cause a denial of service for a sibling site on the same second level domain using this method.

How to fix CVE-2022-32205

To remediate CVE-2022-32205, upgrade the affected package to a fixed version below.

• —upgrade to 7.79.1-r2 or later
• —upgrade to 7.74.0-1.3+deb11u2 or later

Is CVE-2022-32205 being exploited?

Low — EPSS is 2.2%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 7.79.1-r2
• from 0, < 7.74.0-1.3+deb11u2

CVSS scores

References (2)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2022-32205
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2022-32205