[USN-6239-1] ECDSA Util vulnerability

[Jorge Sancho Larraz]

==========================================================================
Ubuntu Security Notice USN-6239-1
July 20, 2023

ecdsautils vulnerability
==========================================================================

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

ECDSA Util could be made to accept forged signatures.

Software Description:
- ecdsautils: ECDSA elliptic curve cryptography command line tools

Details:

It was discovered that ECDSA Util did not properly verify certain
signature values.
An attacker could possibly use this issue to bypass signature
verification.

Update instructions:

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

Ubuntu 22.04 LTS:
   ecdsautils 0.3.2+git20151018-2+deb10u1build0.22.04.1

Ubuntu 20.04 LTS:
   ecdsautils 0.3.2+git20151018-2+deb10u1build0.20.04.1

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   ecdsautils 0.3.2+git20151018-2ubuntu0.18.04.1~esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   ecdsautils 0.3.2+git20151018-2ubuntu0.16.04.1~esm1

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

References:
   https://ubuntu.com/security/notices/USN-6239-1
   CVE-2022-24884

Package Information:
https://launchpad.net/ubuntu/+source/ecdsautils/0.3.2+git20151018-2+deb10u1build0.22.04.1
https://launchpad.net/ubuntu/+source/ecdsautils/0.3.2+git20151018-2+deb10u1build0.20.04.1

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