# CVE-2013-0249: Memory corruption in n/a

> Remote attackers can cause denial of service or execute arbitrary code via a stack-based buffer overflow in curl's SASL DIGEST-MD5 authentication handling.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/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:** Yes
- **Published:** 8 Mar 2013
- **Updated:** 6 Aug 2024
- **Also known as:** CURL-CVE-2013-0249, DEBIAN-CVE-2013-0249, GHSA-mj69-wpmp-9c9f

## What is CVE-2013-0249?

CVE-2013-0249 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 8 Mar 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Stack-based buffer overflow in the Curl_sasl_create_digest_md5_message function in lib/curl_sasl.c in curl and libcurl 7.26.0 through 7.28.1, when negotiating SASL DIGEST-MD5 authentication, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long string in the realm parameter in a (1) POP3, (2) SMTP or (3) IMAP message.

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

## Which versions are affected by CVE-2013-0249?

It affects 3 products.


Products: Canonical Ubuntu Linux, Haxx Curl, Haxx Libcurl.

## How do I fix CVE-2013-0249?

Upgrade to a fixed version.

## Is CVE-2013-0249 being exploited?

There is no known exploitation of CVE-2013-0249 in the wild and no public exploit code.

Public exploit code:

- cURL - Buffer Overflow (PoC) (exploitdb)

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-0249 and fix it if it is affected.

What it is: CVE-2013-0249 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 8 Mar 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-2013-0249 in the wild and no public exploit code.

Affected product: Canonical Ubuntu Linux. 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-2013-0249/ (Markdown: https://insights.sbomify.com/CVE-2013-0249/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-0249
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-0249
- OSV: https://osv.dev/vulnerability/CVE-2013-0249

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From sbomify Insights: https://insights.sbomify.com/CVE-2013-0249/
Summaries are generated and may contain mistakes; the official description above is the record.