| Name | CVE-2022-27779 |
| Description | libcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies. curl's "cookie engine" can bebuilt with or without [Public Suffix List](https://publicsuffix.org/)awareness. If PSL support not provided, a more rudimentary check exists to atleast prevent cookies from being set on TLDs. This check was broken if thehost name in the URL uses a trailing dot.This can allow arbitrary sites to set cookies that then would get sent to adifferent and unrelated site or domain. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| curl (PTS) | jessie, jessie (lts) | 7.38.0-4+deb8u28 | fixed |
| stretch (security) | 7.52.1-5+deb9u16 | fixed |
| stretch (lts), stretch | 7.52.1-5+deb9u22 | fixed |
| buster, buster (lts) | 7.64.0-4+deb10u10 | fixed |
| buster (security) | 7.64.0-4+deb10u9 | fixed |
| bullseye | 7.74.0-1.3+deb11u13 | fixed |
| bullseye (security) | 7.74.0-1.3+deb11u14 | fixed |
| bookworm | 7.88.1-10+deb12u8 | fixed |
| bookworm (security) | 7.88.1-10+deb12u5 | fixed |
| sid, trixie | 8.11.1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| curl | source | jessie | (not affected) | | | |
| curl | source | stretch | (not affected) | | | |
| curl | source | buster | (not affected) | | | |
| curl | source | bullseye | (not affected) | | | |
| curl | source | (unstable) | 7.83.1-1 | | | |
Notes
[bullseye] - curl <not-affected> (Vulnerable code introduced later)
[buster] - curl <not-affected> (Vulnerable code introduced later)
[stretch] - curl <not-affected> (Vulnerable code introduced later)
https://www.openwall.com/lists/oss-security/2022/05/11/2
https://curl.se/docs/CVE-2022-27779.html
Introduced by: https://github.com/curl/curl/commit/b27ad8e1d3e68eb3214fcbb398ca436873aa7c67 (curl-7_82_0)
Fixed by: https://github.com/curl/curl/commit/7e92d12b4e6911f424678a133b19de670e183a59 (curl-7_83_1)
[jessie] - curl <not-affected> (Vulnerable code introduced later)