Packages
- libjwt - C library to handle JWT (JSON Web Token)
Details
It was discovered that libjwt did not use a constant-time comparison when
verifying HMAC signatures. A remote attacker could possibly use this issue
to forge signatures through a timing side-channel attack and bypass
authentication.
It was discovered that libjwt did not use a constant-time comparison when
verifying HMAC signatures. A remote attacker could possibly use this issue
to forge signatures through a timing side-channel attack and bypass
authentication.
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 22.04 LTS jammy | libjwt-gnutls0 – 1.10.2-1ubuntu0.22.04.1~esm1 | ||
| libjwt0 – 1.10.2-1ubuntu0.22.04.1~esm1 | |||
| 20.04 LTS focal | libjwt-gnutls0 – 1.10.2-1ubuntu0.20.04.1~esm1 | ||
| libjwt0 – 1.10.2-1ubuntu0.20.04.1~esm1 | |||
| 18.04 LTS bionic | libjwt0 – 1.9.0-1ubuntu0.1~esm1 | ||
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