Out-of-bounds Write Affecting curl package, versions <7.86.0-r0


0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Availability High

    Threat Intelligence

    EPSS 0.15% (51st percentile)
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NVD
6.5 medium
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Red Hat
5.3 medium

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  • Snyk ID SNYK-ALPINE317-CURL-3139321
  • published 23 Nov 2022
  • disclosed 5 Dec 2022

How to fix?

Upgrade Alpine:3.17 curl to version 7.86.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Alpine. See How to fix? for Alpine:3.17 relevant fixed versions and status.

curl can be told to parse a .netrc file for credentials. If that file endsin a line with 4095 consecutive non-white space letters and no newline, curlwould first read past the end of the stack-based buffer, and if the readworks, write a zero byte beyond its boundary.This will in most cases cause a segfault or similar, but circumstances might also cause different outcomes.If a malicious user can provide a custom netrc file to an application or otherwise affect its contents, this flaw could be used as denial-of-service.