Multiple vulnerabilities have been identified in LibTIFF, which could be exploited by attackers to execute arbitrary commands or cause a denial of service.
The first issue is due to a stack overflow error in the "TIFFFetchShortPair()" [tif_dirread.c] function when handling a malformed "DotRange", "YCbCrSubsampling", "HalftoneHints", or "PageNumber" tag, which could be exploited by attackers to compromise a vulnerable system via a malicious image.
The second flaw is due to a heap overflow error in the "TIFFScanLineSize()" and "TIFFReadScanline()" [tiff_jpeg.c] functions, which could be exploited by attackers to execute arbitrary commands.
The third vulnerability is due to a heap overflow error in the PixarLog decoder, which could be exploited by attackers to execute arbitrary code.
The fourth issue is due to a heap overflow error in the NeXT RLE decoder, which could be exploited by attackers to compromise a vulnerable system.
The fifth flaw is due to an infinite loop in the "EstimateStripByteCounts()" function, which could be exploited by attackers to cause a denial of service.
The sixth issue is due to various unchecked arithmetic operations, which could be exploited by attackers to bypass security restrictions and cause a denial of service.
The seventh vulnerability is due to errors in the custom tag support, which could be exploited by attackers to bypass security checks, cause a denial of service, or execute arbitrary commands.
Credits
Vulnerabilities reported by Tavis Ormandy (Google Security Team)
ChangeLog
2006-08-02 : Initial release
Vulnerability Management
Subscribe to FrSIRT VNS and receive real-time e-mail and SMS alerts when new vulnerabilities, exploits, or patches relevant to your systems and network configurations are available.
Feedback
If you have additional information or corrections for this security advisory please submit them via our contact form or by email to updates@frsirt.com.
French
