Use After Free Affecting curl package, versions <0:7.61.1-30.el8


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.15% (53rd percentile)

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  • Snyk IDSNYK-RHEL8-CURL-5548568
  • published21 Dec 2022
  • disclosed21 Dec 2022

Introduced: 21 Dec 2022

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

How to fix?

Upgrade RHEL:8 curl to version 0:7.61.1-30.el8 or higher.
This issue was patched in RHSA-2023:2963.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by RHEL. See How to fix? for RHEL:8 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

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