# CVE-2013-5549: Denial of service in n/a

> Remote attackers can cause a transmission outage in Cisco IOS XR route processors by sending fragmented IPv4 or IPv6 packets.

- **Severity:** High 7.1 (`AV:N/AC:M/Au:N/C:N/I:N/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:** 25 Oct 2013
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-rmqj-585g-98v7

## What is CVE-2013-5549?

CVE-2013-5549 is a high-severity denial of service vulnerability in Cisco Ios Xr, published on 25 Oct 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Cisco IOS XR 3.8.1 through 4.2.0 does not properly process fragmented packets within the RP-A, RP-B, PRP, and DRP-B route-processor components, which allows remote attackers to cause a denial of service (transmission outage) via (1) IPv4 or (2) IPv6 traffic, aka Bug ID CSCuh30380.

## Which versions are affected by CVE-2013-5549?

It affects 1 product.


Products: Cisco Ios Xr.

## How do I fix CVE-2013-5549?

No fix has been published for CVE-2013-5549 yet. Limit exposure of the affected software until one is available.

## Is CVE-2013-5549 being exploited?

There is no known exploitation of CVE-2013-5549 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Ios Xr

- [CVE-2020-3118](https://insights.sbomify.com/CVE-2020-3118/): Cisco IOS XR Software Discovery Protocol Format String (high 8.8, exploited in the wild)
- [CVE-2020-3569](https://insights.sbomify.com/CVE-2020-3569/): Cisco IOS XR Software DVMRP Memory Exhaustion (high 8.6, exploited in the wild)
- [CVE-2020-3566](https://insights.sbomify.com/CVE-2020-3566/): Cisco IOS XR Software DVMRP Memory Exhaustion (high 8.6, exploited in the wild)
- [CVE-2010-3035](https://insights.sbomify.com/CVE-2010-3035/): Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service (high 7.5, exploited in the wild)
- [CVE-2022-20821](https://insights.sbomify.com/CVE-2022-20821/): Cisco IOS XR Open Port (medium 6.5, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-5549 and fix it if it is affected.

What it is: CVE-2013-5549 is a high-severity denial of service vulnerability in Cisco Ios Xr, published on 25 Oct 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2013-5549 in the wild and no public exploit code.

Affected product: Cisco Ios Xr. 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-2013-5549/ (Markdown: https://insights.sbomify.com/CVE-2013-5549/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-5549
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-5549
- OSV: https://osv.dev/vulnerability/CVE-2013-5549

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From sbomify Insights: https://insights.sbomify.com/CVE-2013-5549/
Summaries are generated and may contain mistakes; the official description above is the record.