CVE-2020-27758: Integer Overflow
First published: Tue Nov 03 2020(Updated: )
A flaw was found in ImageMagick in coders/txt.c. 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 long long`. 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 7.0.8-68.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ImageMagick ImageMagick | <6.9.10-68 | |
| ImageMagick ImageMagick | >=7.0.0-0<7.0.8-68 | |
| Debian Debian Linux | =9.0 | |
| redhat/ImageMagick 7.0.8 | <68 | 68 |
| 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 8:7.1.1.39+dfsg1-3 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1894236
- 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-2020-27758
- https://github.com/ImageMagick/ImageMagick/issues/1719
- https://github.com/ImageMagick/ImageMagick/commit/f0a8d407b2801174fd8923941a9e7822f7f9a506
- https://access.redhat.com/support/policy/updates/errata
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1901261
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1901262
- https://access.redhat.com/security/cve/cve-2020-27758
- https://github.com/ImageMagick/ImageMagick6/commit/e5e15b4456c825f78554e2ef1cc6344fa1218448
- https://security-tracker.debian.org/tracker/CVE-2020-27758
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27758
- https://nvd.nist.gov/vuln/detail/CVE-2020-27758
- https://ubuntu.com/security/CVE-2020-27758
Frequently Asked Questions
What is the vulnerability ID for this ImageMagick flaw?
The vulnerability ID for this ImageMagick flaw is CVE-2020-27758.
What is the severity level of CVE-2020-27758?
The severity level of CVE-2020-27758 is medium (3.3).
How does the ImageMagick flaw in coders/txt.c impact applications?
The flaw in coders/txt.c can lead to undefined behavior and values outside the range of type `unsigned long long`, potentially impacting application availability.
Which versions of ImageMagick are affected by CVE-2020-27758?
The affected versions of ImageMagick are 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, 8:6.9.11.24+dfsg-1, 8:6.9.10.23+dfsg-2.1+deb10u5, 8:6.9.11.60+dfsg-1.3+deb11u1, 8:6.9.11.60+dfsg-1.6, 6.9.10-68, 7.0.8-68, and ImageMagick 7.0.8.
Are there any remediation steps available?
Yes, there are remediation steps available. Please refer to the official security notice or vendor advisories for detailed remediation information.
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