| Name | CVE-2020-12823 |
| Description | OpenConnect 8.09 has a buffer overflow, causing a denial of service (application crash) or possibly unspecified other impact, via crafted certificate data to get_cert_name in gnutls.c. |
| 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-2212-1 |
| Debian Bugs | 960620 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| openconnect (PTS) | jessie, jessie (lts) | 6.00-2+deb8u2 | fixed |
| stretch (security), stretch (lts), stretch | 7.08-1+deb9u1 | vulnerable |
| buster (security), buster, buster (lts) | 8.02-1+deb10u1 | vulnerable |
| bullseye | 8.10-2 | fixed |
| bookworm | 9.01-3 | fixed |
| sid, trixie | 9.12-3 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://gitlab.com/openconnect/openconnect/-/merge_requests/108
Only triggerable by local certs, which are under the control of the user