Integer overflow in Imagemagick
CVE-2020-27754
In IntensityCompare() of /magick/quantize.c, there are calls to PixelPacketIntensity() which could return overflowed values to the caller when ImageMagick processes a crafted input file. To mitigate this, the patch introduces and uses the ConstrainPixelIntensity() function, which forces the pixel intensities to be within the proper bounds in the event of an overflow. This flaw affects ImageMagick versions prior to 6.9.10-69 and 7.0.8-69.
Vulnerability class: Integer Overflow
EPSS: 0.011 (63.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
Affected products
- Imagemagick
- Debian Debian_linux — versions 9.0
- N/a Imagemagick — versions prior to 6.9.10-69, prior to 7.0.8-69
Weakness classification (CWE)
References
- secalert@redhat.com (Exploit, Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (mailing-list, Mailing List, Third Party Advisory)
- secalert@redhat.com (mailing-list)
Frequently asked questions
- What is CVE-2020-27754?
- CVE-2020-27754 is a low-severity vulnerability in Imagemagick, classified under Integer Overflow or Wraparound. CVSS score: 3.3/10. Published 2020-12-08.
- How severe is CVE-2020-27754?
- Low severity. CVSS v3 base score is 3.3 out of 10.