Use After Free Affecting curl package, versions <7.86.0-3


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.1% (43rd percentile)

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  • Snyk ID SNYK-DEBIAN12-CURL-3179182
  • published 21 Dec 2022
  • disclosed 9 Feb 2023

How to fix?

Upgrade Debian:12 curl to version 7.86.0-3 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 Debian. See How to fix? for Debian:12 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
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NVD

5.9 medium
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SUSE

5.6 medium
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Red Hat

5.9 medium