[Pkg-privacy-maintainers] Bug#1011458: snowflake: CVE-2022-29222 - fails to reject untrustworthy client certificates due to missing checks on private key

[Neil Williams]

Source: snowflake
Version: 1.1.0-2
Severity: grave
Tags: security
Justification: user security hole
X-Debbugs-Cc: codehelp at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for snowflake.

CVE-2022-29222[0]:
| Pion DTLS is a Go implementation of Datagram Transport Layer Security.
| Prior to version 2.1.5, a DTLS Client could provide a Certificate that
| it doesn't posses the private key for and Pion DTLS wouldn't reject
| it. This issue affects users that are using Client certificates only.
| The connection itself is still secure. The Certificate provided by
| clients can't be trusted when using a Pion DTLS server prior to
| version 2.1.5. Users should upgrade to version 2.1.5 to receive a
| patch. There are currently no known workarounds.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2022-29222
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-29222

Please adjust the affected versions in the BTS as needed.


-- System Information:
Debian Release: bookworm/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.17.0-2-amd64 (SMP w/6 CPU threads; PREEMPT)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled