# CVE-2014-1512: Use after free in n/a

> Remote attackers can execute arbitrary code via a use-after-free flaw in the JavaScript engine, requiring user interaction to visit a malicious page.

- **Severity:** Critical 10.0 (`AV:N/AC:L/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 19 Mar 2014
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-9v4g-qfh7-82cm

## What is CVE-2014-1512?

CVE-2014-1512 is a critical use after free vulnerability in Canonical Ubuntu Linux, published on 19 Mar 2014. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Use-after-free vulnerability in the TypeObject class in the JavaScript engine in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allows remote attackers to execute arbitrary code by triggering extensive memory consumption while garbage collection is occurring, as demonstrated by improper handling of BumpChunk objects.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2014-1512?

It affects 16 products.


Products: Canonical Ubuntu Linux, Debian Debian Linux, Mozilla Firefox, Mozilla Seamonkey, Mozilla Thunderbird, Opensuse Opensuse, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus, Redhat Enterprise Linux Server Tus, Redhat Enterprise Linux Workstation, Suse Suse Linux Enterprise Desktop, Suse Suse Linux Enterprise Server, Suse Suse Linux Enterprise Software Development Kit.

## How do I fix CVE-2014-1512?

Upgrade to a fixed version.

## Is CVE-2014-1512 being exploited?

There is no known exploitation of CVE-2014-1512 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2014-1512 and fix it if it is affected.

What it is: CVE-2014-1512 is a critical use after free vulnerability in Canonical Ubuntu Linux, published on 19 Mar 2014. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2014-1512 in the wild and no public exploit code.

Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2014-1512/ (Markdown: https://insights.sbomify.com/CVE-2014-1512/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2014-1512
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2014-1512
- OSV: https://osv.dev/vulnerability/CVE-2014-1512

---
From sbomify Insights: https://insights.sbomify.com/CVE-2014-1512/
Summaries are generated and may contain mistakes; the official description above is the record.