Homepage
About Snyk

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

Severity

medium

    Threat Intelligence

    EPSS
    0.3% (70th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-AMZN2-LIBCURLDEVEL-1702829
  • published 27 Sep 2021
  • disclosed 5 Aug 2021
Report a new vulnerability Found a mistake?

Introduced: 5 Aug 2021

CVE-2021-22925 Open this link in a new tab
CWE-908 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 libcurl-devel 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 libcurl-devel package and not the libcurl-devel 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.

References

CVSS Scores

version 3.1
Expand this section

Snyk

3.1 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    None
  • Availability (A)
    None
Expand this section

NVD

5.3 medium
Expand this section

SUSE

4.3 medium
Expand this section

Red Hat

3.1 low