Loop with Unreachable Exit Condition ('Infinite Loop') Affecting py3-pillow package, versions <8.2.0-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.42% (75th percentile)

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  • Snyk IDSNYK-ALPINE316-PY3PILLOW-2846948
  • published2 Aug 2021
  • disclosed2 Jun 2021

Introduced: 2 Jun 2021

CVE-2021-28676  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Alpine:3.16 py3-pillow to version 8.2.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream py3-pillow package and not the py3-pillow package as distributed by Alpine. See How to fix? for Alpine:3.16 relevant fixed versions and status.

An issue was discovered in Pillow before 8.2.0. For FLI data, FliDecode did not properly check that the block advance was non-zero, potentially leading to an infinite loop on load.

CVSS Scores

version 3.1