Telstra has revealed the addition of almost one million new mobile services in the six months to December 2011, but Sensis revenues plummeted 24 percent in 12 months.
Attributed to 'Marsu,' the problem is that malformed bitmap files (including .BMP, .DIB and .RLE) can trigger a stack-based buffer overflow. A maliciously-crafted file can take advantage of this vulnerability to execute arbitrary code.
Marsu has posted a sample exploit that runs Windows' calculator program when the specially-crafted image file is opened in Photoshop. Given that there's a common codebase for the Mac and Windows versions of Photoshop, it is likely that the flaw could be exploited on both platforms.
It is also possible that Photoshop's routines for handling other types of files have similar flaws. Now-patched flaws in both Windows and Apple's QuickTime allowed exploits to be hidden in JPEG, GIF and bitmap files, among others. Furthermore, other Adobe applications may use the same routines as Photoshop.
Until Adobe issues a patch, the recommendation is that users avoid opening bitmap files of uncertain parentage in Photoshop.
David Bass
| For the fourth year in a row, IDC has placed content security provider Websense (NASDAQ: WBSN) at the top of the IDC Worldwide Web Security 2011 –…
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