Debian Security Advisory

DLA-2774-1 openssl1.0 -- LTS security update

Date Reported:
30 Sep 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2021-3712.
More information:

An issue has been found in openssl1.0, a Secure Sockets Layer library. The issue is related to read buffer overruns while processing ASN.1 strings.

For Debian 9 stretch, this problem has been fixed in version 1.0.2u-1~deb9u6.

We recommend that you upgrade your openssl1.0 packages.

For the detailed security status of openssl1.0 please refer to its security tracker page at:

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: