CVE-2022-32205

MEDIUM

curl 7.71.0-7.84.0 - Denial of Service via Excessive Set-Cookie Headers

Title source: llm
STIX 2.1

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.

References (9)

Core 9
Core References
Third Party Advisory vendor-advisory
https://www.debian.org/security/2022/dsa-5197
Mailing List, Third Party Advisory mailing-list
http://seclists.org/fulldisclosure/2022/Oct/41
Mailing List, Third Party Advisory mailing-list
http://seclists.org/fulldisclosure/2022/Oct/28
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/202212-01
Exploit, Third Party Advisory
https://hackerone.com/reports/1569946

Scores

CVSS v3 4.3
EPSS 0.0219
EPSS Percentile 84.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (20)
apple/macos < 13.0
debian/debian_linux 11.0
fedoraproject/fedora 35
haxx/curl 7.71.0 - 7.84.0
netapp/clustered_data_ontap
netapp/element_software
netapp/h300s_firmware
netapp/h410s_firmware
netapp/h500s_firmware
netapp/h700s_firmware
... and 10 more
Published Jul 07, 2022
Tracked Since Feb 18, 2026