---
title: 'USN-220-1: w3c-libwww vulnerability | Ubuntu security notices'
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/notices/USN-220-1
---

1. [Ubuntu Security Notices](https://ubuntu.com/security/notices)
2. USN-220-1

---

# USN-220-1: w3c-libwww vulnerability

Publication date

1 December 2005

Overview

w3c-libwww vulnerability

Releases

[5.10](https://ubuntu.com/security/notices?release=breezy)
[5.04](https://ubuntu.com/security/notices?release=hoary)
[4.10](https://ubuntu.com/security/notices?release=warty)

---

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## Details

Sam Varshavchik discovered several buffer overflows in the
HTBoundary\_put\_block() function. By sending specially crafted HTTP
multipart/byteranges MIME messages, a malicious HTTP server could
trigger an out of bounds memory access in the libwww library, which
causes the program that uses the library to crash.

## Update instructions

In general, a standard system update will make all the necessary changes.

[Learn more about how to get the fixes.](https://ubuntu.com/security/cves/about#security)

The problem can be corrected by updating your system to the following package versions:

| Ubuntu Release | Package Version |
| --- | --- |
| 5.10 breezy | [libwww0](https://ubuntu.com/security/notices/USN-220-1) – | | |
| 5.04 hoary | [libwww0](https://ubuntu.com/security/notices/USN-220-1) – | | |
| 4.10 warty | [libwww0](https://ubuntu.com/security/notices/USN-220-1) – | | |

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## References

* [CVE-2005-3183](https://ubuntu.com/security/CVE-2005-3183)