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Unrated severityNVD Advisory· Published Dec 4, 2020· Updated Aug 4, 2024

CVE-2020-27774

CVE-2020-27774

Description

A flaw in ImageMagick's MagickCore/statistic.c allows a crafted file to trigger undefined behavior via an excessive shift, potentially causing denial of service.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

A flaw in ImageMagick's `MagickCore/statistic.c` allows a crafted file to trigger undefined behavior via an excessive shift, potentially causing denial of service.

Vulnerability

A flaw exists in ImageMagick versions prior to 7.0.9-0 in MagickCore/statistic.c. When processing a specially crafted file, the code performs a shift operation on a 64-bit ssize_t type with a too-large shift value, leading to undefined behavior [1]. This occurs during image statistics computation.

Exploitation

An attacker can exploit this by providing a crafted image file to be processed by ImageMagick. No special privileges are required; the attacker only needs to deliver the file to a user or service that uses ImageMagick to process images. The undefined behavior is triggered during the processing of the malicious file [1].

Impact

The primary impact is denial of service, as the undefined behavior most likely leads to application availability issues. However, due to the nature of undefined behavior, other consequences such as information disclosure or arbitrary code execution cannot be ruled out, though no specific impact was demonstrated [1].

Mitigation

The flaw is fixed in ImageMagick version 7.0.9-0. Users should upgrade to this version or later. For Red Hat Enterprise Linux 5, 6, and 7, this flaw is out of support scope. Inkscape on RHEL 8 is not affected as it no longer uses a bundled ImageMagick [1]. No workaround is provided.

References
  1. 1898296 – (CVE-2020-27774) CVE-2020-27774 ImageMagick: integer overflow at MagickCore/statistic.c

AI Insight generated on May 26, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.

Affected products

40

Patches

0

No patches discovered yet.

Vulnerability mechanics

No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.

References

3

News mentions

0

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