CVE-2016-10145

Off-by-one error in coders/wpg.c in ImageMagick allows remote attackers to have unspecified impact via vectors related to a string copy.

The imagemagick package has been updated to version 6.9.9.41 which fixes several unspecified security vulnerabilities. This update fixes several vulnerabilities in imagemagick, including: Various memory handling problems and cases of missing or incomplete input sanitising may result in denial of service, memory disclosure or the execution of arbitrary code if malformed GIF, TTF, SVG, TIFF, PCX, JPG or SFW files are processed.

Several packages have been rebuilt for the updated ImageMagick.

This update for ImageMagick fixes the following issues:

• CVE-2016-10046: Prevent buffer overflow in draw.c caused by an incorrect length calculation (bsc#1017308)
• CVE-2016-10048: Arbitrary module could have been load because relative path were not escaped (bsc#1017310)
• CVE-2016-10049: Corrupt RLE files could have overflowed a buffer due to a incorrect length calculation (bsc#1017311)
• CVE-2016-10050: Corrupt RLE files could have overflowed a heap buffer due to a missing offset check (bsc#1017312)
• CVE-2016-10051: Fixed use after free when reading PWP files (bsc#1017313)
• CVE-2016-10052: Added bound check to exif parsing of JPEG files (bsc#1017314)
• CVE-2016-10059: Unchecked calculation when reading TIFF files could have lead to a buffer overflow (bsc#1017318)
• CVE-2016-10060: Improved error handling when writing files to not mask errors (bsc#1017319)
• CVE-2016-10061: Improved error handling when writing files to not mask errors (bsc#1017319).
• CVE-2016-10062: Improved error handling when writing files to not mask errors (bsc#1017319).
• CVE-2016-10063: Check validity of extend during TIFF file reading (bsc#1017320)
• CVE-2016-10064: Improved checks for buffer overflow when reading TIFF files (bsc#1017321)
• CVE-2016-10065: Unchecked calculations when reading VIFF files could have lead to out of bound reads (bsc#1017322)
• CVE-2016-10068: Prevent NULL pointer access when using the MSL interpreter (bsc#1017324)
• CVE-2016-10069: Add check for invalid mat file (bsc#1017325).
• CVE-2016-10070: Prevent allocating the wrong amount of memory when reading mat files (bsc#1017326)
• CVE-2016-10071: Prevent allocating the wrong amount of memory when reading mat files (bsc#1017326)
• CVE-2016-10144: Added a check after allocating memory when parsing IPL files (bsc#1020433)
• CVE-2016-10145: Fixed of-by-one in string copy operation when parsing WPG files (bsc#1020435)
• CVE-2016-10146: Captions and labels were handled incorrectly, causing a memory leak that could have lead to DoS (bsc#1020443)
• CVE-2017-5506: Missing offset check leading to a double-free (bsc#1020436)
• CVE-2017-5507: Fixed a memory leak when reading MPC files allowing for DoS (bsc#1020439)
• CVE-2017-5508: Increase the amount of memory allocated for TIFF pixels to prevent a heap buffer-overflow (bsc#1020441)
• CVE-2017-5510: Prevent out-of-bounds write when reading PSD files (bsc#1020446).
• CVE-2017-5511: A missing cast when reading PSD files could have caused memory corruption by a heap overflow (bsc#1020448)

This update removes the fix for CVE-2016-9773. ImageMagick-6 was not affected by CVE-2016-9773 and it caused a regression (at least in GraphicsMagick) (bsc#1017421).

This update for ImageMagick fixes the following issues:

• CVE-2016-10046: Prevent buffer overflow in draw.c caused by an incorrect length calculation (bsc#1017308)
• CVE-2016-10048: Arbitrary module could have been load because relative path were not escaped (bsc#1017310)
• CVE-2016-10049: Corrupt RLE files could have overflowed a buffer due to a incorrect length calculation (bsc#1017311)
• CVE-2016-10050: Corrupt RLE files could have overflowed a heap buffer due to a missing offset check (bsc#1017312)
• CVE-2016-10051: Fixed use after free when reading PWP files (bsc#1017313)
• CVE-2016-10052: Added bound check to exif parsing of JPEG files (bsc#1017314).
• CVE-2016-10059: Unchecked calculation when reading TIFF files could have lead to a buffer overflow (bsc#1017318)
• CVE-2016-10060: Improved error handling when writing files to not mask errors (bsc#1017319).
• CVE-2016-10063: Check validity of extend during TIFF file reading (bsc#1017320).
• CVE-2016-10064: Improved checks for buffer overflow when reading TIFF files (bsc#1017321)
• CVE-2016-10065: Unchecked calculations when reading VIFF files could have lead to out of bound reads (bsc#1017322)
• CVE-2016-10068: Prevent NULL pointer access when using the MSL interpreter (bsc#1017324)
• CVE-2016-10070: Prevent allocating the wrong amount of memory when reading mat files (bsc#1017326)
• CVE-2016-10071: Prevent allocating the wrong amount of memory when reading mat files (bsc#1017326).
• CVE-2016-10144: Added a check after allocating memory when parsing IPL files (bsc#1020433).
• CVE-2016-10145: Fixed of-by-one in string copy operation when parsing WPG files (bsc#1020435).
• CVE-2016-10146: Captions and labels were handled incorrectly, causing a memory leak that could have lead to DoS (bsc#1020443)
• CVE-2017-5506: Missing offset check leading to a double-free (bsc#1020436).
• CVE-2017-5507: Fixed a memory leak when reading MPC files allowing for DoS (bsc#1020439).
• CVE-2017-5508: Increase the amount of memory allocated for TIFF pixels to prevent a heap buffer-overflow (bsc#1020441).
• CVE-2017-5511: A missing cast when reading PSD files could have caused memory corruption by a heap overflow (bsc#1020448)

This update removes the fix for CVE-2016-9773. ImageMagick-6 was not affected by CVE-2016-9773 and it caused a regression (at least in GraphicsMagick) (bsc#1017421).

It was discovered that ImageMagick incorrectly handled certain malformed image files. If a user or automated system using ImageMagick were tricked into opening a specially crafted image, an attacker could exploit this to cause a denial of service or possibly execute code with the privileges of the user invoking the program.