# CVE-2011-3493: Memory corruption in n/a

> Remote attackers can cause denial of service or execute arbitrary code via stack-based buffer overflows in Cogent DataHub.

- **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:** Not needed
- **Fix available:** No
- **Published:** 16 Sep 2011
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-3c26-6j36-gq3h

## What is CVE-2011-3493?

CVE-2011-3493 is a critical memory corruption vulnerability in n/a, published on 16 Sep 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Multiple stack-based buffer overflows in the DH_OneSecondTick function in Cogent DataHub 7.1.1.63 and earlier allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via long (1) domain, (2) report_domain, (3) register_datahub, or (4) slave commands.

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

## Which versions are affected by CVE-2011-3493?

It affects 1 product.


Products: Cogentdatahub Cogent Datahub.

## How do I fix CVE-2011-3493?

No fix has been published for CVE-2011-3493 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-3493 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-3493 exists.

Public exploit code:

- Cogent DataHub 7.1.1.63 - Stack Overflow (exploitdb)
- Cogent Datahub 7.1.1.63 - Remote Unicode Buffer Overflow (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2016-2288](https://insights.sbomify.com/CVE-2016-2288/): Privilege escalation in n/a (high 7.8)
- [CVE-2014-2352](https://insights.sbomify.com/CVE-2014-2352/): Cogent DataHub Path Traversal (high 7.8)
- [CVE-2014-3788](https://insights.sbomify.com/CVE-2014-3788/): Heap-based buffer overflow in the Web Server in Cogent Real-Time Systems Cogent DataHub before 7.3.5 allows remote attackers to execute arbi (high 7.5)
- [CVE-2014-3789](https://insights.sbomify.com/CVE-2014-3789/): GetPermissions.asp in Cogent Real-Time Systems Cogent DataHub before 7.3.5 allows remote attackers to execute arbitrary commands via unspecified vectors. (high 7.5)
- [CVE-2014-2353](https://insights.sbomify.com/CVE-2014-2353/): Cogent DataHub XSS (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-3493 and fix it if it is affected.

What it is: CVE-2011-3493 is a critical memory corruption vulnerability in n/a, published on 16 Sep 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-3493 exists.

Affected product: n/a. 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-2011-3493/ (Markdown: https://insights.sbomify.com/CVE-2011-3493/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-3493
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-3493
- OSV: https://osv.dev/vulnerability/CVE-2011-3493

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From sbomify Insights: https://insights.sbomify.com/CVE-2011-3493/
Summaries are generated and may contain mistakes; the official description above is the record.