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GD Graphics Library "gdImageStringFTEx()" Denial of Service
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Secunia Advisory:
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SA23916
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Release Date:
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2007-01-29
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Critical:
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Less critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | GD Graphics Library 2.x
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| | CVE reference: | CVE-2007-0455 (Secunia mirror)
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This advisory is currently marked as unpatched!
- Companies can be alerted when a patch is released! |
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Description:
Kees Cook has reported a vulnerability in GD Graphics Library, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an error within the "gdImageStringFTEx()" function in gdft.c, which can be exploited to increment the terminating NULL of a string, potentially resulting in a buffer overflow.
Successful exploitation requires that a JIS-encoded font is used.
Solution:
Do not use JIS-encoded fonts with an application using GD Graphics Library.
Provided and/or discovered by:
Kees Cook
Original Advisory:
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=224607
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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5 Related Secunia Security Advisories
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1. GD Graphics Library Multiple Vulnerabilities
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2. GD Graphics Library Truncated PNG Data Denial of Service
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3. GD Graphics Library GIF File Handling Denial of Service
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4. GD Graphics Library Unspecified Buffer Overflow Vulnerabilities
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5. GD Graphics Library "gdImageCreateFromPngCtx()" Integer Overflow
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