Use of Uninitialized Resource Affecting curl package, versions <7.58.0-2ubuntu3.14


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.55% (78th percentile)

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  • Snyk IDSNYK-UBUNTU1804-CURL-1321098
  • published21 Jul 2021
  • disclosed5 Aug 2021

Introduced: 21 Jul 2021

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

How to fix?

Upgrade Ubuntu:18.04 curl to version 7.58.0-2ubuntu3.14 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 Ubuntu. See How to fix? for Ubuntu:18.04 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