Debian LTS DLA-3739-1: Critical Timing Attack Fix in libjwt
Summary
An issue has been found in libjwt, a C library to handle JWT (JSON Web
Token). Due to using strcmp(), which does not use constant time during
execution, a timing side channel attack might be possible.
For Debian 10 buster, this problem has been fixed in version
1.10.1-1+deb10u1.
We recommend that you upgrade your libjwt packages.
For the detailed security status of libjwt please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/libjwt
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS