What’s Vulnerable › Vulnerabilities

CVE-2020-5310

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-01-03 · updated 2026-06-17
• Weakness: CWE-190

Description

libImaging/TiffDecode.c in Pillow before 6.2.2 has a TIFF decoding integer overflow, related to realloc.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 19.10
• Fedoraproject Fedora: 30, 31
• python-pillow Pillow: before 6.2.2 — fixed in 6.2.2

How to fix

Upgrade to a fixed version: python-pillow Pillow 6.2.2. Check the vendor advisory for mitigations.

References

• https://github.com/python-pillow/Pillow/commit/4e2def2539ec13e53a82e06c4b3daf00454100c4
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MMU3WT2X64GS5WHDPKKC2WZA7UIIQ3A/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3DUMIBUYGJRAVJCTFUWBRLVQKOUTVX5P/
• https://pillow.readthedocs.io/en/stable/releasenotes/6.2.2.html
• https://usn.ubuntu.com/4272-1/
• https://github.com/python-pillow/Pillow/commit/4e2def2539ec13e53a82e06c4b3daf00454100c4
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MMU3WT2X64GS5WHDPKKC2WZA7UIIQ3A/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3DUMIBUYGJRAVJCTFUWBRLVQKOUTVX5P/
• https://pillow.readthedocs.io/en/stable/releasenotes/6.2.2.html
• https://usn.ubuntu.com/4272-1/

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