Cleartext Transmission of Sensitive Information Affecting libcurl-minimal package, versions <0:7.86.0-1.amzn2022.0.1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.18% (56th percentile)

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  • Snyk IDSNYK-AMZN2022-LIBCURLMINIMAL-3164477
  • published8 Dec 2022
  • disclosed29 Oct 2022

Introduced: 29 Oct 2022

CVE-2022-42916  (opens in a new tab)
CWE-319  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2022 libcurl-minimal to version 0:7.86.0-1.amzn2022.0.1 or higher.
This issue was patched in ALAS2022-2022-246.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcurl-minimal package and not the libcurl-minimal package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2022 relevant fixed versions and status.

In curl before 7.86.0, the HSTS check could be bypassed to trick it into staying with HTTP. Using its HSTS support, curl can be instructed to use HTTPS directly (instead of using an insecure cleartext HTTP step) even when HTTP is provided in the URL. This mechanism could be bypassed if the host name in the given URL uses IDN characters that get replaced with ASCII counterparts as part of the IDN conversion, e.g., using the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the common ASCII full stop of U+002E (.). The earliest affected version is 7.77.0 2021-05-26.

CVSS Scores

version 3.1