Debian Security Advisory

DLA-2493-1 openssl1.0 -- LTS security update

Date Reported:
14 Dec 2020
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2020-1971.
More information:

David Benjamin discovered a flaw in the GENERAL_NAME_cmp() function which could cause a NULL dereference, resulting in denial of service.

For Debian 9 stretch, this problem has been fixed in version 1.0.2u-1~deb9u3.

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: