CVE-2022-32205

moderate-risk
Published 2022-07-07

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.

Do I need to act?

~
2.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.3/10 Medium
NETWORK / LOW complexity

Affected Products (20)

Scalance Sc622-2C Firmware
Scalance Sc626-2C Firmware
Scalance Sc632-2C Firmware
Scalance Sc636-2C Firmware
Scalance Sc642-2C Firmware
Scalance Sc646-2C Firmware
44
/ 100
moderate-risk
Severity 18/34 · Moderate
Exploitability 6/34 · Minimal
Exposure 20/34 · Moderate