In GNOME evolution-data-server before 3.35.91, a malicious server can crash the mail client with a NULL pointer dereference by sending an invalid (e.g., minimal) CAPABILITY line on a connection attempt. This is related to imapx_free_capability and imapx_connect_to_server.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16117
Reference (s):
- https://gitlab.gnome.org/GNOME/evolution-data-server/-/commit/2cc39592b532cf0dc994fd3694b8e6bf924c9ab5
- https://gitlab.gnome.org/GNOME/evolution-data-server/-/commit/627c3cdbfd077e59aa288c85ff8272950577f1d7
- https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/189
- MLIST:[debian-lts-announce] 20200802 [SECURITY] [DLA 2309-1] evolution-data-server security update
- URL: https://lists.debian.org/debian-lts-announce/2020/08/msg00005.html