| Name | CVE-2023-46218 |
| Description | This flaw allows a malicious HTTP server to set "super cookies" in curl that are then passed back to more origins than what is otherwise allowed or possible. This allows a site to set cookies that then would get sent to different and unrelated sites and domains. It could do this by exploiting a mixed case flaw in curl's function that verifies a given cookie domain against the Public Suffix List (PSL). For example a cookie could be set with `domain=co.UK` when the URL used a lower case hostname `curl.co.uk`, even though `co.uk` is listed as a PSL domain. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3692-1, DSA-5587-1 |
| Debian Bugs | 1057646 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| curl (PTS) | buster | 7.64.0-4+deb10u2 | vulnerable |
| buster (security) | 7.64.0-4+deb10u9 | fixed |
| bullseye (security), bullseye | 7.74.0-1.3+deb11u11 | fixed |
| bookworm, bookworm (security) | 7.88.1-10+deb12u5 | fixed |
| trixie, sid | 8.7.1-3 | fixed |
The information below is based on the following data on fixed versions.
Notes
Introduced by: https://github.com/curl/curl/commit/e77b5b7453c1e8ccd7ec0816890d98e2f392e465 (curl-7_46_0)
Fixed by: https://github.com/curl/curl/commit/2b0994c29a721c91c572cff7808c572a24d251eb (curl-8_5_0)
https://curl.se/docs/CVE-2023-46218.html