# CVE-2010-0685: Code injection in n/a

> Attackers can inject metacharacters into the dialplan via crafted SIP messages, potentially executing arbitrary code or adding unauthorized call legs.

- **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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 23 Feb 2010
- **Updated:** 7 Aug 2024
- **Also known as:** DEBIAN-CVE-2010-0685, GHSA-2w2c-jqh6-rwvr

## What is CVE-2010-0685?

CVE-2010-0685 is a medium-severity code injection vulnerability in Digium Asterisk, published on 23 Feb 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The design of the dialplan functionality in Asterisk Open Source 1.2.x, 1.4.x, and 1.6.x; and Asterisk Business Edition B.x.x and C.x.x, when using the ${EXTEN} channel variable and wildcard pattern matches, allows context-dependent attackers to inject strings into the dialplan using metacharacters that are injected when the variable is expanded, as demonstrated using the Dial application to process a crafted SIP INVITE message that adds an unintended outgoing channel leg.  NOTE: it could be argued that this is not a vulnerability in Asterisk, but a class of vulnerabilities that can occur in any program that uses this feature without the associated filtering functionality that is already available.

## Which versions are affected by CVE-2010-0685?

It affects 1 product.


Products: Digium Asterisk.

## How do I fix CVE-2010-0685?

Apply the vendor's patch.

## Is CVE-2010-0685 being exploited?

There is no known exploitation of CVE-2010-0685 in the wild and no public exploit code.

## Other vulnerabilities in Digium Asterisk

- [CVE-2017-14100](https://insights.sbomify.com/CVE-2017-14100/): Command injection in n/a (critical 9.8)
- [CVE-2014-8418](https://insights.sbomify.com/CVE-2014-8418/): Privilege escalation in n/a (critical 9.0)
- [CVE-2011-1599](https://insights.sbomify.com/CVE-2011-1599/): Missing authorization in n/a (critical 9.0)
- [CVE-2017-16671](https://insights.sbomify.com/CVE-2017-16671/): Memory corruption in n/a (high 8.8)
- [CVE-2017-7617](https://insights.sbomify.com/CVE-2017-7617/): Memory corruption in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2010-0685 and fix it if it is affected.

What it is: CVE-2010-0685 is a medium-severity code injection vulnerability in Digium Asterisk, published on 23 Feb 2010. 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-2010-0685 in the wild and no public exploit code.

Affected product: Digium Asterisk. 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-2010-0685/ (Markdown: https://insights.sbomify.com/CVE-2010-0685/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2010-0685
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2010-0685
- OSV: https://osv.dev/vulnerability/CVE-2010-0685

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From sbomify Insights: https://insights.sbomify.com/CVE-2010-0685/
Summaries are generated and may contain mistakes; the official description above is the record.