Tobias Stoeckmann found an integer overflow issue in JSON-C, a C library to manipulate JSON objects, when reading maliciously crafted large files. The issue could be exploited to cause denial of service or possibly execute arbitrary code.

For Debian 9 stretch, this problem has been fixed in version 0.12.1-1.1+deb9u1.

We recommend that you upgrade your json-c packages.

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

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