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[email protected]CVE-2020-27771

HistoryDec 04, 2020 - 3:15 p.m.

CVE-2020-27771

2020-12-0415:15:10

CWE-190

[email protected]

web.nvd.nist.gov

207

cve

2020

27771

imagemagick

pdf

vulnerability

patch

unsigned char

ssize_t

red hat

nvd

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

3.3 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

4.8 Medium

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

33.7%

JSON

In RestoreMSCWarning() of /coders/pdf.c there are several areas where calls to GetPixelIndex() could result in values outside the range of representable for the unsigned char type. The patch casts the return value of GetPixelIndex() to ssize_t type to avoid this bug. This undefined behavior could be triggered when ImageMagick processes a crafted pdf file. Red Hat Product Security marked this as Low severity because although it could potentially lead to an impact to application availability, no specific impact was demonstrated in this case. This flaw affects ImageMagick versions prior to 7.0.9-0.

Affected configurations

Vulners

NVD

Node

imagemagickimagemagickRange≤7.0.9

VendorProductVersionCPE
imagemagickimagemagick*cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
imagemagick	imagemagick	*	cpe:2.3:a:imagemagick:imagemagick::::::::

CNA Affected

[
  {
    "vendor": "n/a",
    "product": "ImageMagick",
    "versions": [
      {
        "version": "ImageMagick 7.0.9-0",
        "status": "affected"
      }
    ]
  }
]