CVE-2020-27774: Integer Overflow
First published: Mon Nov 16 2020(Updated: )
A flaw was found in ImageMagick in MagickCore/statistic.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of a too large shift for 64-bit type `ssize_t`. 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=1898296
- 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-2020-27774
- https://github.com/ImageMagick/ImageMagick/issues/1743
- https://github.com/ImageMagick/ImageMagick/commit/29cee9152d1b5487cfd19443ca48935eea0cabe2
- https://access.redhat.com/support/policy/updates/errata
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1901293
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1901294
- https://access.redhat.com/security/cve/cve-2020-27774
- https://github.com/ImageMagick/ImageMagick6/commit/052175e4b190598141fbcc64641cd5ee4db3602d
- https://security-tracker.debian.org/tracker/CVE-2020-27774
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27774
- https://nvd.nist.gov/vuln/detail/CVE-2020-27774
- https://ubuntu.com/security/CVE-2020-27774
Frequently Asked Questions
What is CVE-2020-27774?
CVE-2020-27774 is a vulnerability in ImageMagick that allows an attacker to trigger undefined behavior, leading to a potential impact on the application availability.
How severe is CVE-2020-27774?
CVE-2020-27774 has a severity rating of 3.3, which is considered medium.
Which software versions are affected by CVE-2020-27774?
CVE-2020-27774 affects ImageMagick versions 8:6.9.10.23+dfsg-2.1ubuntu11.4, 8:6.9.10.23+dfsg-2.1ubuntu13.3, 8:6.9.7.4+dfsg-16ubuntu6.11, and 8:6.9.11.24+dfsg-1.
How can I fix CVE-2020-27774?
To fix CVE-2020-27774, upgrade ImageMagick to version 8:6.9.11.24+dfsg-1 or apply the recommended remedies provided by the software source (e.g., Ubuntu, Debian).
Where can I find more information about CVE-2020-27774?
You can find more information about CVE-2020-27774 on the MITRE CVE database, Ubuntu security notices, and the NIST National Vulnerability Database (NVD).
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