Use of Uninitialized Resource Affecting curl-debuginfo package, versions <0:7.76.1-7.amzn2.0.2


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.55% (78th percentile)

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  • Snyk IDSNYK-AMZN2-CURLDEBUGINFO-1702422
  • published27 Sept 2021
  • disclosed5 Aug 2021

Introduced: 5 Aug 2021

CVE-2021-22925  (opens in a new tab)
CWE-908  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 curl-debuginfo to version 0:7.76.1-7.amzn2.0.2 or higher.
This issue was patched in ALAS2-2021-1700.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl-debuginfo package and not the curl-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

curl supports the -t command line option, known as CURLOPT_TELNETOPTIONSin libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending NEW_ENV variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.

CVSS Scores

version 3.1