CVE-2020-27756

Published at:
2020-12-08T22:15:18.383

Global infos:

In ParseMetaGeometry() of MagickCore/geometry.c, image height and width calculations can lead to divide-by-zero conditions which also lead to undefined behavior. This flaw can be triggered by a crafted input file processed by ImageMagick and could impact application availability. The patch uses multiplication in addition to the function `PerceptibleReciprocal()` in order to prevent such divide-by-zero conditions. This flaw affects ImageMagick versions prior to 7.0.9-0.

CVE Status: Modified

References:

  • [email protected]
  • [email protected]
  • af854a3a-2127-422b-91ae-364da2661108
  • af854a3a-2127-422b-91ae-364da2661108
  • Metrics:

    AttributeValue
    Attack ComplexityLOW
    Attack VectorLOCAL
    Availability ImpactHIGH
    Base Score5.5
    Base SeverityMEDIUM
    Confidentiality ImpactNONE
    Integrity ImpactNONE
    Privileges RequiredNONE
    ScopeUNCHANGED
    User InteractionREQUIRED
    Vector StringCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    Exploitability Score1.8
    Impact Score3.6
    Source[email protected]
    TypePrimary

    Links:

    Exploit-db
    Github