CVE-2020-27767: Integer Overflow
First published: Wed Nov 04 2020(Updated: )
A flaw was found in ImageMagick in MagickCore/quantum.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 types `float` and `unsigned char`. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.9-0.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ImageMagick ImageMagick | <6.9.10-69 | |
| ImageMagick ImageMagick | >=7.0.0-0<7.0.9.0 | |
| Redhat Enterprise Linux | =5.0 | |
| Redhat Enterprise Linux | =6.0 | |
| Redhat Enterprise Linux | =7.0 | |
| Debian Debian Linux | =9.0 | |
| redhat/ImageMagick 7.0.9 | <0 | 0 |
| debian/imagemagick | 8:6.9.11.60+dfsg-1.3+deb11u4 8:6.9.11.60+dfsg-1.3+deb11u3 8:6.9.11.60+dfsg-1.6+deb12u2 8:6.9.11.60+dfsg-1.6+deb12u1 8:6.9.13.12+dfsg1-1 8:7.1.1.39+dfsg1-2 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1894687
- https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html
- https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
- https://launchpad.net/bugs/cve/CVE-2020-27767
- https://github.com/ImageMagick/ImageMagick/issues/1741
- https://github.com/ImageMagick/ImageMagick/commit/564f2a35e523e2b6cce9485018157f03ec05a947
- https://access.redhat.com/support/policy/updates/errata
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1901279
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1901280
- https://access.redhat.com/security/cve/cve-2020-27767
- https://github.com/ImageMagick/ImageMagick6/commit/c2f66e7fc9189a652f77a021bd047c4146d634d1
- https://security-tracker.debian.org/tracker/CVE-2020-27767
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27767
- https://nvd.nist.gov/vuln/detail/CVE-2020-27767
- https://ubuntu.com/security/CVE-2020-27767
Frequently Asked Questions
What is CVE-2020-27767?
CVE-2020-27767 is a vulnerability found in ImageMagick in MagickCore/quantum.h that allows an attacker to trigger undefined behavior.
How does CVE-2020-27767 impact ImageMagick?
CVE-2020-27767 can lead to values outside the range of types `float` and `unsigned char`, causing potential impact to ImageMagick.
What is the severity of CVE-2020-27767?
CVE-2020-27767 has a severity rating of medium (3.3).
Which versions of ImageMagick are affected by CVE-2020-27767?
ImageMagick versions 8:6.9.10.23+dfsg-2.1ubuntu11.4, 8:6.9.10.23+dfsg-2.1ubuntu13.3, 8:6.9.11.24+dfsg-1, and 8:6.9.7.4+dfsg-16ubuntu6.11 are affected by CVE-2020-27767.
How can I fix CVE-2020-27767 in ImageMagick?
To fix CVE-2020-27767, update ImageMagick to versions 8:6.9.10.23+dfsg-2.1ubuntu11.4, 8:6.9.10.23+dfsg-2.1ubuntu13.3, 8:6.9.11.24+dfsg-1, or 8:6.9.7.4+dfsg-16ubuntu6.11.
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