An imagemagick security update has been released for Debian GNU/Linux 8 Extended LTS to address several security vulnerabilities.

ELA-345-1 imagemagick security update

Package imagemagick
Version 8:6.8.9.9-5+deb8u22
Related CVEs CVE-2020-19667 CVE-2020-25665 CVE-2020-25674 CVE-2020-27560 CVE-2020-27750 CVE-2020-27760 CVE-2020-27763 CVE-2020-27765 CVE-2020-27773 CVE-2020-29599

Several security vulnerabilities were found in ImageMagick, a suite of image manipulation programs. An attacker could cause denial of service and execution of arbitrary code when a crafted image file is processed.

CVE-2020-19667

Stack-based buffer overflow and unconditional jump in ReadXPMImage in coders/xpm.c

CVE-2020-25665

The PALM image coder at coders/palm.c makes an improper call to AcquireQuantumMemory() in routine WritePALMImage() because it needs to be offset by 256. This can cause a out-of-bounds read later on in the routine. This could cause impact to reliability.

CVE-2020-25674

WriteOnePNGImage() from coders/png.c (the PNG coder) has a for loop with an improper exit condition that can allow an out-of-bounds READ via heap-buffer-overflow. This occurs because it is possible for the colormap to have less than 256 valid values but the loop condition will loop 256 times, attempting to pass invalid colormap data to the event logger.

CVE-2020-27560

ImageMagick allows Division by Zero in OptimizeLayerFrames in MagickCore/layer.c, which may cause a denial of service.

CVE-2020-27750

A flaw was found in MagickCore/colorspace-private.h and MagickCore/quantum.h. An attacker who submits a crafted file that is processedcould trigger undefined behavior in the form of values outside the range of type unsigned char and math division by zero. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior.

CVE-2020-27760

In GammaImage() of /MagickCore/enhance.c, depending on the gamma value, it’s possible to trigger a divide-by-zero condition when a crafted input file is processed by ImageMagick. This could lead to an impact to application availability.

CVE-2020-27763

A flaw was found in MagickCore/resize.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of math division by zero. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior.

CVE-2020-27765

A flaw was found in MagickCore/segment.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of math division by zero. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior.

CVE-2020-27773

A flaw was found in MagickCore/gem-private.h. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type unsigned char or division by zero. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior.

CVE-2020-29599

ImageMagick mishandles the -authenticate option, which allows setting a password for password-protected PDF files. The user-controlled password was not properly escaped/sanitized and it was therefore possible to inject additional shell commands via coders/pdf.c.

For Debian 8 jessie, these problems have been fixed in version 8:6.8.9.9-5+deb8u22.

We recommend that you upgrade your imagemagick packages.

Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/

  ELA-345-1 imagemagick security update