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CVE-2020-27770

MEDIUM
5.5
CVSS Score
Published: December 4, 2020 at 12:00 AM UTC
Updated: June 17, 2026 at 03:09 AM UTC
2 products affected across 2 vendorsDebian LinuxImageMagick

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Severity
MEDIUM5.5
Exploit prediction
EPSS 1%

Description

Due to a missing check for 0 value of `replace_extent`, it is possible for offset `p` to overflow in SubstituteString(), causing potential impact to application availability. This could be triggered by a crafted input file that is processed by ImageMagick. This flaw affects ImageMagick versions prior to 7.0.8-68.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
9.0
ImageMagick· Imagemagick
95%
v < 6.9.10-687.0.0-0 ≤ v < 7.0.8-687.0.8-68
Affected range stops below 6.9.10-68, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.0.8-68, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

ExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1894691
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html
Mailing List
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190

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