| Name | CVE-2023-28319 |
| Description | A use after free vulnerability exists in curl <v8.1.0 in the way libcurl offers a feature to verify an SSH server's public key using a SHA 256 hash. When this check fails, libcurl would free the memory for the fingerprint before it returns an error message containing the (now freed) hash. This flaw risks inserting sensitive heap-based data into the error message that might be shown to users or otherwise get leaked and revealed. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1036239 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| curl (PTS) | 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 | buster | (not affected) | | | |
| curl | source | bullseye | (not affected) | | | |
| curl | source | (unstable) | 7.88.1-10 | | | 1036239 |
Notes
[bullseye] - curl <not-affected> (Vulnerable code not present)
[buster] - curl <not-affected> (Vulnerable code not present)
https://curl.se/docs/CVE-2023-28319.html
Introduced by: https://github.com/curl/curl/commit/3467e89bb97e6c87c77e82a046c59cb4b2d29a74 (curl-7_81_0)
Fixed by: https://github.com/curl/curl/commit/8e21b1a05f3c0ee098dbcb6c3d84cb61f102a122 (curl-8_1_0)