| Name | CVE-2021-22923 |
| Description | When curl is instructed to get content using the metalink feature, and a user name and password are used to download the metalink XML file, those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary to the user's expectations and intentions and without telling the user it happened. |
| 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 | vulnerable |
| stretch (security) | 7.52.1-5+deb9u16 | vulnerable |
| stretch (lts), stretch | 7.52.1-5+deb9u22 | vulnerable |
| buster, buster (lts) | 7.64.0-4+deb10u10 | vulnerable |
| buster (security) | 7.64.0-4+deb10u9 | vulnerable |
| bullseye | 7.74.0-1.3+deb11u13 | vulnerable |
| bullseye (security) | 7.74.0-1.3+deb11u14 | vulnerable |
| bookworm | 7.88.1-10+deb12u8 | fixed |
| bookworm (security) | 7.88.1-10+deb12u5 | fixed |
| sid, trixie | 8.11.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| curl | source | (unstable) | 7.79.1-1 | unimportant | | |
Notes
https://curl.se/docs/CVE-2021-22923.html
https://www.openwall.com/lists/oss-security/2021/07/21/2
The fix for earlier versions is to rebuild curl with the metalink support
switched off.
Metalink support not enabled in Debian builds.