USN-21-1: libgd vulnerabilities
First published: Wed Nov 10 2004(Updated: )
Several buffer overflows have been discovered in libgd's PNG handling functions. If an attacker tricked a user into loading a malicious PNG image, they could leverage this into executing arbitrary code in the context of the user opening image. Most importantly, this library is commonly used in PHP. One possible target would be a PHP driven photo website that lets users upload images. Therefore this vulnerability might lead to privilege escalation to a web server's privileges.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/libgd1-xpm | < | |
| Ubuntu gir1.2-packagekitglib-1.0 | =4.10 | |
| All of | ||
| ubuntu/libgd1-noxpm | < | |
| Ubuntu gir1.2-packagekitglib-1.0 | =4.10 |
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Reference Links
Frequently Asked Questions
What is the severity of USN-21-1?
The severity of USN-21-1 is critical due to potential arbitrary code execution exploitability in libgd's PNG handling.
How do I fix USN-21-1?
To fix USN-21-1, update the libgd1-xpm and libgd1-noxpm packages to the latest version provided by Ubuntu.
Who is affected by USN-21-1?
Users of Ubuntu 4.10 with libgd1-xpm or libgd1-noxpm installed are affected by USN-21-1.
What components of libgd are vulnerable in USN-21-1?
The vulnerability in USN-21-1 affects the PNG handling functions within the libgd library.
What is the risk of not addressing USN-21-1?
Not addressing USN-21-1 could allow attackers to execute arbitrary code with the permissions of the user opening a malicious PNG image.
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