Use After Free Affecting curl package, versions <7.80.0-r5


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.15% (52nd percentile)

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  • Snyk IDSNYK-ALPINE315-CURL-3179546
  • published21 Dec 2022
  • disclosed9 Feb 2023

Introduced: 21 Dec 2022

CVE-2022-43552  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Alpine:3.15 curl to version 7.80.0-r5 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:3.15 relevant fixed versions and status.

A use after free vulnerability exists in curl <7.87.0. Curl can be asked to tunnel virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.

CVSS Scores

version 3.1