# CVE-2015-4512: Information disclosure in n/a

> Remote attackers can read sensitive memory or crash the browser via crafted CANVAS elements in Firefox on Linux.

- **Severity:** Medium 6.4 (`AV:N/AC:L/Au:N/C:P/I:N/A:P`)
- **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:** 24 Sep 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-qcgw-w6wr-h99m, UBUNTU-CVE-2015-4512

## What is CVE-2015-4512?

CVE-2015-4512 is a medium-severity vulnerability in Mozilla Firefox, published on 24 Sep 2015. 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

gfx/2d/DataSurfaceHelpers.cpp in Mozilla Firefox before 41.0 on Linux improperly attempts to use the Cairo library with 32-bit color-depth surface creation followed by 16-bit color-depth surface display, which allows remote attackers to obtain sensitive information from process memory or cause a denial of service (out-of-bounds read) by using a CANVAS element to trigger 2D rendering.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2015-4512?

It affects 1 product.


Products: Mozilla Firefox.

## How do I fix CVE-2015-4512?

Upgrade to a fixed version.

## Is CVE-2015-4512 being exploited?

There is no known exploitation of CVE-2015-4512 in the wild and no public exploit code.

## Other vulnerabilities in Mozilla Firefox

- [CVE-2019-11708](https://insights.sbomify.com/CVE-2019-11708/): Mozilla Firefox and Thunderbird Sandbox Escape (critical 10.0, exploited in the wild)
- [CVE-2010-3765](https://insights.sbomify.com/CVE-2010-3765/): Mozilla Multiple Products Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2022-26486](https://insights.sbomify.com/CVE-2022-26486/): Mozilla Firefox Use-After-Free (critical 9.6, exploited in the wild)
- [CVE-2022-26485](https://insights.sbomify.com/CVE-2022-26485/): Mozilla Firefox Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2019-11707](https://insights.sbomify.com/CVE-2019-11707/): Mozilla Firefox and Thunderbird Type Confusion (high 8.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-4512 and fix it if it is affected.

What it is: CVE-2015-4512 is a medium-severity vulnerability in Mozilla Firefox, published on 24 Sep 2015. 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-2015-4512 in the wild and no public exploit code.

Affected product: Mozilla Firefox. 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-2015-4512/ (Markdown: https://insights.sbomify.com/CVE-2015-4512/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-4512
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-4512
- OSV: https://osv.dev/vulnerability/CVE-2015-4512

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From sbomify Insights: https://insights.sbomify.com/CVE-2015-4512/
Summaries are generated and may contain mistakes; the official description above is the record.