# CVE-2013-3950: Memory corruption in n/a

> A stack-based buffer overflow in iOS dyld allows attackers to facilitate untethering attacks via a crafted environment variable.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:P/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Jun 2013
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-jhhj-m43q-gw88

## What is CVE-2013-3950?

CVE-2013-3950 is a medium-severity memory corruption vulnerability in Apple Iphone Os, published on 5 Jun 2013. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Stack-based buffer overflow in the openSharedCacheFile function in dyld.cpp in dyld in Apple iOS 5.1.x and 6.x through 6.1.3 makes it easier for attackers to conduct untethering attacks via a long string in the DYLD_SHARED_CACHE_DIR environment variable.

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

## Which versions are affected by CVE-2013-3950?

It affects 1 product.


Products: Apple Iphone Os.

## How do I fix CVE-2013-3950?

No fix has been published for CVE-2013-3950 yet. Limit exposure of the affected software until one is available.

## Is CVE-2013-3950 being exploited?

There is no known exploitation of CVE-2013-3950 in the wild and no public exploit code.

## Other vulnerabilities in Apple Iphone Os

- [CVE-2021-30666](https://insights.sbomify.com/CVE-2021-30666/): Apple iOS WebKit Buffer Overflow (high 8.8, exploited in the wild)
- [CVE-2021-30761](https://insights.sbomify.com/CVE-2021-30761/): Apple iOS WebKit Memory Corruption (high 8.8, exploited in the wild)
- [CVE-2021-30762](https://insights.sbomify.com/CVE-2021-30762/): Apple iOS WebKit Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2016-4657](https://insights.sbomify.com/CVE-2016-4657/): Apple iOS Webkit Memory Corruption (high 8.8, exploited in the wild)
- [CVE-2019-7286](https://insights.sbomify.com/CVE-2019-7286/): Apple Multiple Products Memory Corruption (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-3950 and fix it if it is affected.

What it is: CVE-2013-3950 is a medium-severity memory corruption vulnerability in Apple Iphone Os, published on 5 Jun 2013. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2013-3950 in the wild and no public exploit code.

Affected product: Apple Iphone Os. 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-2013-3950/ (Markdown: https://insights.sbomify.com/CVE-2013-3950/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-3950
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-3950
- OSV: https://osv.dev/vulnerability/CVE-2013-3950

---
From sbomify Insights: https://insights.sbomify.com/CVE-2013-3950/
Summaries are generated and may contain mistakes; the official description above is the record.