# CVE-2012-5032: Auth bypass in n/a

> Remote attackers can bypass authentication in Cisco IOS Flex-VPN to redirect or discard VPN traffic by joining the cluster.

- **Severity:** Medium 6.4 (`AV:N/AC:L/Au:N/C:N/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Apr 2014
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-qpqj-275w-f6mr

## What is CVE-2012-5032?

CVE-2012-5032 is a medium-severity authentication bypass vulnerability in Cisco Ios, published on 23 Apr 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Flex-VPN load-balancing feature in the ipsec-ikev2 implementation in Cisco IOS before 15.1(1)SY3 does not require authentication, which allows remote attackers to trigger the forwarding of VPN traffic to an attacker-controlled destination, or the discarding of this traffic, by arranging for an arbitrary device to become a cluster member, aka Bug ID CSCub93641.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2012-5032?

It affects 1 product.


Products: Cisco Ios.

## How do I fix CVE-2012-5032?

No fix has been published for CVE-2012-5032 yet. Limit exposure of the affected software until one is available.

## Is CVE-2012-5032 being exploited?

There is no known exploitation of CVE-2012-5032 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Ios

- [CVE-2017-12240](https://insights.sbomify.com/CVE-2017-12240/): Cisco IOS and IOS XE Software DHCP Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2017-3881](https://insights.sbomify.com/CVE-2017-3881/): Cisco IOS and IOS XE Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2018-0167](https://insights.sbomify.com/CVE-2018-0167/): Cisco IOS, XR, and XE Software Buffer Overflow (high 8.8, exploited in the wild)
- [CVE-2017-6736](https://insights.sbomify.com/CVE-2017-6736/): Cisco IOS and IOS XE Software SNMP Remote Code Execution (high 8.8, exploited in the wild)
- [CVE-2017-6737](https://insights.sbomify.com/CVE-2017-6737/): Cisco IOS and IOS XE Software SNMP Remote Code Execution (high 8.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-5032 and fix it if it is affected.

What it is: CVE-2012-5032 is a medium-severity authentication bypass vulnerability in Cisco Ios, published on 23 Apr 2014. 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-2012-5032 in the wild and no public exploit code.

Affected product: Cisco Ios. 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-2012-5032/ (Markdown: https://insights.sbomify.com/CVE-2012-5032/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-5032
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-5032
- OSV: https://osv.dev/vulnerability/CVE-2012-5032

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-5032/
Summaries are generated and may contain mistakes; the official description above is the record.