PublicDateAtUSN: 2020-12-04 15:15:00 UTC
Candidate: CVE-2020-27771
PublicDate: 2020-12-04 15:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27771
 https://ubuntu.com/security/notices/USN-4988-1
Description:
 In RestoreMSCWarning() of /coders/pdf.c there are several areas where calls
 to GetPixelIndex() could result in values outside the range of
 representable for the unsigned char type. The patch casts the return value
 of GetPixelIndex() to ssize_t type to avoid this bug. This undefined
 behavior could be triggered when ImageMagick processes a crafted pdf file.
 Red Hat Product Security marked this as Low severity because although it
 could potentially lead to an impact to application availability, no
 specific impact was demonstrated in this case. This flaw affects
 ImageMagick versions prior to 7.0.9-0.
Ubuntu-Description:
Notes:
Mitigation:
Bugs:
 https://github.com/ImageMagick/ImageMagick/issues/1753
Priority: low
Discovered-by:
Assigned-to:
CVSS:
 nvd: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L [3.3 LOW]


Patches_imagemagick:
 upstream: https://github.com/ImageMagick/ImageMagick6/commit/a07ecde4c1c3a3efaa628434adc903295f6bb2b3
upstream_imagemagick: released (8:6.9.11.24+dfsg-1)
precise/esm_imagemagick: DNE
trusty_imagemagick: ignored (out of standard support)
trusty/esm_imagemagick: DNE
xenial_imagemagick: ignored (end of standard support, was needs-triage)
esm-infra/xenial_imagemagick: needs-triage
bionic_imagemagick: released (8:6.9.7.4+dfsg-16ubuntu6.11)
focal_imagemagick: released (8:6.9.10.23+dfsg-2.1ubuntu11.4)
groovy_imagemagick: released (8:6.9.10.23+dfsg-2.1ubuntu13.3)
hirsute_imagemagick: not-affected (8:6.9.11.60+dfsg-1ubuntu1)
impish_imagemagick: not-affected (8:6.9.11.60+dfsg-1ubuntu1)
jammy_imagemagick: not-affected (8:6.9.11.60+dfsg-1ubuntu1)
devel_imagemagick: not-affected (8:6.9.11.60+dfsg-1ubuntu1)