Debian Security Advisory

DLA-2836-1 nss -- LTS security update

Date Reported:
06 Dec 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2021-43527.
More information:

Tavis Ormandy discovered that nss, the Mozilla Network Security Service library, is prone to a heap overflow flaw when verifying DSA or RSA-PPS signatures, which could result in denial of service or potentially the execution of arbitrary code.

For Debian 9 stretch, this problem has been fixed in version 2:3.26.2-1.1+deb9u3.

We recommend that you upgrade your nss packages.

For the detailed security status of nss 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: