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.
CVSS Details
- CVSS 3.1 Base Score: 4.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-curl | Mar 26, 2024 | Jul 7, 2022 | |
| Amazon Linux Ami 2 | amazon-linux-ami-2-upgrade-curlamazon-linux-ami-2-upgrade-curl-debuginfoamazon-linux-ami-2-upgrade-libcurlamazon-linux-ami-2-upgrade-libcurl-devel | Nov 10, 2022 | Jul 7, 2022 | |
| Amazon_linux_2023 | amazon-linux-2023-upgrade-curlamazon-linux-2023-upgrade-curl-debuginfoamazon-linux-2023-upgrade-curl-debugsourceamazon-linux-2023-upgrade-curl-minimalamazon-linux-2023-upgrade-curl-minimal-debuginfoamazon-linux-2023-upgrade-libcurlamazon-linux-2023-upgrade-libcurl-debuginfoamazon-linux-2023-upgrade-libcurl-develamazon-linux-2023-upgrade-libcurl-minimalamazon-linux-2023-upgrade-libcurl-minimal-debuginfo | Feb 17, 2025 | Jun 27, 2022 | |
| Apple Osx Curl | apple-osx-upgrade-latest | Nov 29, 2022 | Jul 7, 2022 | |
| Debian | debian-upgrade-curl | Nov 4, 2022 | Jul 7, 2022 | |
| Freebsd | freebsd-upgrade-package-curl | Nov 4, 2022 | Jun 27, 2022 | |
| Gentoo Linux | gentoo-linux-upgrade-net-misc-curl | Dec 19, 2022 | Jul 7, 2022 | |
| Huawei Euleros 2_0_sp10 | huawei-euleros-2_0_sp10-upgrade-curlhuawei-euleros-2_0_sp10-upgrade-libcurl | Oct 11, 2022 | Jul 7, 2022 | |
| Splunk | splunk-upgrade-latest | Sep 30, 2025 | Jul 7, 2022 | |
| Suse | — | suse-upgrade-curlsuse-upgrade-libcurl-develsuse-upgrade-libcurl-devel-32bitsuse-upgrade-libcurl4suse-upgrade-libcurl4-32bit | Oct 26, 2022 | Jul 7, 2022 |
| Ubuntu | ubuntu-upgrade-curlubuntu-upgrade-libcurl3-gnutlsubuntu-upgrade-libcurl3-nssubuntu-upgrade-libcurl4 | Mar 22, 2023 | Jul 7, 2022 | |
| Vmware Photon_os | vmware-photon_os_update_tdnf | Jan 20, 2025 | Jul 7, 2022 |
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