Out-of-bounds Write Affecting zlib package, versions <1.2.12-r2

  • Attack Complexity


  • Confidentiality


  • Integrity


  • Availability


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  • snyk-id


  • published

    6 Aug 2022

  • disclosed

    5 Aug 2022

How to fix?

Upgrade Alpine:3.15 zlib to version 1.2.12-r2 or higher.

NVD Description

Note: Versions mentioned in the description apply to the upstream zlib package. See How to fix? for Alpine:3.15 relevant versions.

zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).