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CVE-2022-32205

Published: August 31, 2023Last modified: August 31, 2023

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.

Severity score breakdown

ParameterValue
Base score4.3
Attack VectorNETWORK
Attack complexityLOW
Privileges requiredNONE
User interactionREQUIRED
ScopeUNCHANGED
ConfidentialityNONE
Integrity impactNONE
Availability impactLOW
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Status

ProductReleasePackageStatus
Alpaquita Linux23 LTScurlNot affected (8.2.1-r0)
StreamcurlNot affected (8.2.1-r0)

References

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