[USN-6239-1] ECDSA Util vulnerability

Jorge Sancho Larraz jorge.sancho.larraz at canonical.com
Thu Jul 20 09:50:39 UTC 2023

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)


ECDSA Util could be made to accept forged signatures.

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


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

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.


Package Information:

-------------- next part --------------
A non-text attachment was scrubbed...
Name: OpenPGP_signature
Type: application/pgp-signature
Size: 840 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20230720/f06b8d7e/attachment.sig>

More information about the ubuntu-security-announce mailing list