[Pkg-gmagick-im-team] Bug#942578: imagemagick: CVE-2019-17540: heap-based buffer overflow in ReadPSInfo in coders/ps.c

[Hugo Lefeuvre]

Source: imagemagick
Version: 8:6.9.10.23+dfsg-2.1
Severity: important

Hi,

imagemagick is affected by CVE-2019-17540, a heap-based buffer overflow in
ReadPSInfo in coders/ps.c.

There are very few information online regarding this vulnerability. I had a
look and found the following four commits:

https://github.com/ImageMagick/ImageMagick/commit/668d6a970553a94b0a2e378afda1d37abac94b5c
https://github.com/ImageMagick/ImageMagick/commit/9667a9034a5eeedb30dfb18cfd1083ff32fd679b
https://github.com/ImageMagick/ImageMagick/commit/73dd03cfb57f8f8c0a732fa062b9966ec7bf2f91
https://github.com/ImageMagick/ImageMagick/commit/e868e227085463932c5db32e5e0f27e306a0eb95

this looks like what we are searching for; a buffer overflow WRITE of size
1 in ReadPSInfo. I will contact Dirk Lemstra and ask for more information.

regards,
Hugo

[0] https://security-tracker.debian.org/tracker/CVE-2019-17540

-- 
                Hugo Lefeuvre (hle)    |    www.owl.eu.com
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