==========================================================================
Ubuntu Security Notice USN-6307-1
August 24, 2023

cjose vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)

Summary:

JOSE for C/C++ could be made to crash if it received specially crafted input.

Software Description:
- cjose: C library implementing the JOSE standard (development files)

Details:

It was discovered that JOSE for C/C++ AES GCM decryption routine incorrectly
uses the Tag length from the actual Authentication Tag provided in the JWE.
An attacker could use this to cause a denial of service (system crash) or
might expose sensitive information.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 23.04:
  libcjose0                       0.6.2.1-1ubuntu0.1

Ubuntu 22.04 LTS:
  libcjose0                       0.6.1+dfsg1-3ubuntu1.1

Ubuntu 20.04 LTS:
  libcjose0                       0.6.1+dfsg1-1ubuntu0.1

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
  libcjose0                       0.6.0+dfsg1-1ubuntu0.1~esm1

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-6307-1
  CVE-2023-37464

Package Information:
  https://launchpad.net/ubuntu/+source/cjose/0.6.2.1-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/cjose/0.6.1+dfsg1-3ubuntu1.1
  https://launchpad.net/ubuntu/+source/cjose/0.6.1+dfsg1-1ubuntu0.1

Ubuntu 6307-1: JOSE for C/C++ vulnerability

August 24, 2023
JOSE for C/C++ could be made to crash if it received specially crafted input.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.04 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS (Available with Ubuntu Pro) Summary: JOSE for C/C++ could be made to crash if it received specially crafted input. Software Description: - cjose: C library implementing the JOSE standard (development files) Details: It was discovered that JOSE for C/C++ AES GCM decryption routine incorrectly uses the Tag length from the actual Authentication Tag provided in the JWE. An attacker could use this to cause a denial of service (system crash) or might expose sensitive information.

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 23.04: libcjose0 0.6.2.1-1ubuntu0.1 Ubuntu 22.04 LTS: libcjose0 0.6.1+dfsg1-3ubuntu1.1 Ubuntu 20.04 LTS: libcjose0 0.6.1+dfsg1-1ubuntu0.1 Ubuntu 18.04 LTS (Available with Ubuntu Pro): libcjose0 0.6.0+dfsg1-1ubuntu0.1~esm1 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6307-1

CVE-2023-37464

Severity
Ubuntu Security Notice USN-6307-1

Package Information

https://launchpad.net/ubuntu/+source/cjose/0.6.2.1-1ubuntu0.1 https://launchpad.net/ubuntu/+source/cjose/0.6.1+dfsg1-3ubuntu1.1 https://launchpad.net/ubuntu/+source/cjose/0.6.1+dfsg1-1ubuntu0.1

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