Bug 1894236 (CVE-2020-27758)
| Summary: | CVE-2020-27758 ImageMagick: outside the range of representable values of type 'unsigned long long' at coders/txt.c | ||
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| Product: | [Other] Security Response | Reporter: | Guilherme de Almeida Suckevicz <gsuckevi> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED WONTFIX | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | CC: | fedora, jhorak, mike, pahan, rhel8-maint, security-response-team, stransky |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | ImageMagick 7.0.8-68 | Doc Type: | If docs needed, set a value |
| Doc Text: |
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.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-11-24 23:34:41 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1901261, 1901262, 1910548 | ||
| Bug Blocks: | 1891602 | ||
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Description
Guilherme de Almeida Suckevicz
2020-11-03 19:17:35 UTC
Acknowledgments: Name: Suhwan Song (Seoul National University) In the txt coder at /coders/txt.c, ReadTXTImage() computes pixel values that could land outside the range of type unsigned long long due to improper max constraints. This flaw can be triggered when ImageMagick processes crafted input under certain conditions. Red Hat Product Security marked this as Low because although it could potentially lead to an impact to application availability, no specific impact was shown in this case. Statement: This flaw is out of support scope for Red Hat Enterprise Linux 5, 6, and 7. Inkscape is not affected because it no longer uses a bundled ImageMagick in Red Hat Enterprise Linux 8. For more information regarding support scopes, please see https://access.redhat.com/support/policy/updates/errata . Created ImageMagick tracking bugs for this issue: Affects: epel-8 [bug 1901261] Affects: fedora-all [bug 1901262] This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2020-27758 |