CVE-2017-12671

In ImageMagick 7.0.6-3, a missing NULL assignment was found in coders/png.c, leading to an invalid free in the function RelinquishMagickMemory in MagickCore/memory.c, which allows attackers to cause a denial of service.

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 several issues.

These security issues were fixed:

• CVE-2017-18027: Prevent memory leak vulnerability in the function ReadMATImage which allowed remote attackers to cause a denial of service via a crafted file (bsc#1076051)
• CVE-2017-18029: Prevent memory leak in the function ReadMATImage which allowed remote attackers to cause a denial of service via a crafted file (bsc#1076021)
• CVE-2017-17681: Prevent infinite loop in the function ReadPSDChannelZip in coders/psd.c, which allowed attackers to cause a denial of service (CPU exhaustion) via a crafted psd image file (bsc#1072901).
• CVE-2017-18008: Prevent memory Leak in ReadPWPImage which allowed attackers to cause a denial of service via a PWP file (bsc#1074309).
• CVE-2018-5685: Prevent infinite loop and application hang in the ReadBMPImage function. Remote attackers could leverage this vulnerability to cause a denial of service via an image file with a crafted bit-field mask value (bsc#1075939)
• CVE-2017-11639: Prevent heap-based buffer over-read in the WriteCIPImage() function, related to the GetPixelLuma function in MagickCore/pixel-accessor.h (bsc#1050635)
• CVE-2017-11525: Prevent memory consumption in the ReadCINImage function that allowed remote attackers to cause a denial of service (bsc#1050098)
• CVE-2017-9262: The ReadJNGImage function in coders/png.c allowed attackers to cause a denial of service (memory leak) via a crafted file (bsc#1043353).
• CVE-2017-9261: The ReadMNGImage function in coders/png.c allowed attackers to cause a denial of service (memory leak) via a crafted file (bsc#1043354).
• CVE-2017-10995: The mng_get_long function in coders/png.c allowed remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via a crafted MNG image (bsc#1047908).
• CVE-2017-11539: Prevent memory leak in the ReadOnePNGImage() function in coders/png.c (bsc#1050037).
• CVE-2017-11505: The ReadOneJNGImage function in coders/png.c allowed remote attackers to cause a denial of service (large loop and CPU consumption) via a crafted file (bsc#1050072).
• CVE-2017-11526: The ReadOneMNGImage function in coders/png.c allowed remote attackers to cause a denial of service (large loop and CPU consumption) via a crafted file (bsc#1050100).
• CVE-2017-11750: The ReadOneJNGImage function in coders/png.c allowed remote attackers to cause a denial of service (NULL pointer dereference) via a crafted file (bsc#1051442).
• CVE-2017-12565: Prevent memory leak in the function ReadOneJNGImage in coders/png.c, which allowed attackers to cause a denial of service (bsc#1052470).
• CVE-2017-12676: Prevent memory leak in the function ReadOneJNGImage in coders/png.c, which allowed attackers to cause a denial of service (bsc#1052708).
• CVE-2017-12673: Prevent memory leak in the function ReadOneMNGImage in coders/png.c, which allowed attackers to cause a denial of service (bsc#1052717).
• CVE-2017-12671: Added NULL assignment in coders/png.c to prevent an invalid free in the function RelinquishMagickMemory in MagickCore/memory.c, which allowed attackers to cause a denial of service (bsc#1052721).
• CVE-2017-12643: Prevent a memory exhaustion vulnerability in ReadOneJNGImage in coders\png.c (bsc#1052768).
• CVE-2017-12641: Prevent a memory leak vulnerability in ReadOneJNGImage in coders\png.c (bsc#1052777).
• CVE-2017-12640: Prevent an out-of-bounds read vulnerability in ReadOneMNGImage in coders/png.c (bsc#1052781).
• CVE-2017-12935: The ReadMNGImage function in coders/png.c mishandled large MNG images, leading to an invalid memory read in the SetImageColorCallBack function in magick/image.c (bsc#1054600).
• CVE-2017-13059: Prevent memory leak in the function WriteOneJNGImage in coders/png.c, which allowed attackers to cause a denial of service (WriteJNGImage memory consumption) via a crafted file (bsc#1055068).
• CVE-2017-13147: Prevent allocation…

This update for ImageMagick fixes several issues.

These security issues were fixed:

• CVE-2018-5685: Prevent infinite loop and application hang in the ReadBMPImage function. Remote attackers could leverage this vulnerability to cause a denial of service via an image file with a crafted bit-field mask value (bsc#1075939)
• CVE-2017-11639: Prevent heap-based buffer over-read in the WriteCIPImage() function, related to the GetPixelLuma function in MagickCore/pixel-accessor.h (bsc#1050635).
• CVE-2017-11525: Prevent memory consumption in the ReadCINImage function that allowed remote attackers to cause a denial of service (bsc#1050098).
• CVE-2017-9262: The ReadJNGImage function in coders/png.c allowed attackers to cause a denial of service (memory leak) via a crafted file (bsc#1043353)
• CVE-2017-9261: The ReadMNGImage function in coders/png.c allowed attackers to cause a denial of service (memory leak) via a crafted file (bsc#1043354)
• CVE-2017-10995: The mng_get_long function in coders/png.c allowed remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via a crafted MNG image (bsc#1047908)
• CVE-2017-11539: Prevent memory leak in the ReadOnePNGImage() function in coders/png.c (bsc#1050037)
• CVE-2017-11505: The ReadOneJNGImage function in coders/png.c allowed remote attackers to cause a denial of service (large loop and CPU consumption) via a crafted file (bsc#1050072)
• CVE-2017-11526: The ReadOneMNGImage function in coders/png.c allowed remote attackers to cause a denial of service (large loop and CPU consumption) via a crafted file (bsc#1050100)
• CVE-2017-11750: The ReadOneJNGImage function in coders/png.c allowed remote attackers to cause a denial of service (NULL pointer dereference) via a crafted file (bsc#1051442)
• CVE-2017-12565: Prevent memory leak in the function ReadOneJNGImage in coders/png.c, which allowed attackers to cause a denial of service (bsc#1052470)
• CVE-2017-12676: Prevent memory leak in the function ReadOneJNGImage in coders/png.c, which allowed attackers to cause a denial of service (bsc#1052708)
• CVE-2017-12673: Prevent memory leak in the function ReadOneMNGImage in coders/png.c, which allowed attackers to cause a denial of service (bsc#1052717)
• CVE-2017-12671: Added NULL assignment in coders/png.c to prevent an invalid free in the function RelinquishMagickMemory in MagickCore/memory.c, which allowed attackers to cause a denial of service (bsc#1052721)
• CVE-2017-12643: Prevent a memory exhaustion vulnerability in ReadOneJNGImage in coders\png.c (bsc#1052768)
• CVE-2017-12641: Prevent a memory leak vulnerability in ReadOneJNGImage in coders\png.c (bsc#1052777)
• CVE-2017-12640: Prevent an out-of-bounds read vulnerability in ReadOneMNGImage in coders/png.c (bsc#1052781)
• CVE-2017-12935: The ReadMNGImage function in coders/png.c mishandled large MNG images, leading to an invalid memory read in the SetImageColorCallBack function in magick/image.c (bsc#1054600)
• CVE-2017-13147: Prevent allocation failure in the function ReadMNGImage in coders/png.c when a small MNG file has a MEND chunk with a large length value (bsc#1055374)
• CVE-2017-13142: Added additional checks for short files to prevent a crafted PNG file from triggering a crash (bsc#1055455)
• CVE-2017-13141: Prevent memory leak in ReadOnePNGImage in coders/png.c (bsc#1055456)
• CVE-2017-14103: The ReadJNGImage and ReadOneJNGImage functions in coders/png.c did not properly manage image pointers after certain error conditions, which allowed remote attackers to conduct use-after-free attacks via a crafted file, related to a ReadMNGImage out-of-order CloseBlob call (bsc#1057000)
• CVE-2017-14649: ReadOneJNGImage in coders/png.c did not properly validate JNG data, leading to a denial of service (assertion failure in magick/pixel_cache.c, and application crash) (bsc#1060162)
• CVE-2017-15218: Prevent memory leak in…