Debian Security Advisory

DLA-2766-1 openssl -- LTS security update

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

An issue has been found in openssl, a Secure Sockets Layer toolkit. Ingo Schwarze reported a buffer overrun flaw when processing ASN.1 strings, which can result in denial of service.

For Debian 9 stretch, this problem has been fixed in version 1.1.0l-1~deb9u4.

We recommend that you upgrade your openssl packages.

For the detailed security status of openssl 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: