A nettle security update has been released for Debian GNU/Linux 10 to address multiple vulnerabilities.

DSA 4933-1: nettle security update

- -------------------------------------------------------------------------
Debian Security Advisory DSA-4933-1 security@debian.org
  https://www.debian.org/security/ Salvatore Bonaccorso
June 18, 2021   https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : nettle
CVE ID : CVE-2021-3580 CVE-2021-20305
Debian Bug : 985652 989631

Multiple vulnerabilities were discovered in nettle, a low level
cryptographic library, which could result in denial of service (remote
crash in RSA decryption via specially crafted ciphertext, crash on ECDSA
signature verification) or incorrect verification of ECDSA signatures.

For the stable distribution (buster), these problems have been fixed in
version 3.4.1-1+deb10u1.

We recommend that you upgrade your nettle packages.

For the detailed security status of nettle please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/nettle

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://www.debian.org/security/