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Use of Uninitialized Resource Affecting libcurl package, versions <0:7.61.1-12.amzn2.0.4

Severity

 Recommended
medium

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    0.2% (59th percentile)

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  • Snyk ID SNYK-AMZN2-LIBCURL-1699127
  • published 27 Sep 2021
  • disclosed 11 Jun 2021
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Introduced: 11 Jun 2021

CVE-2021-22898 Open this link in a new tab
CWE-908 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 libcurl to version 0:7.61.1-12.amzn2.0.4 or higher.
This issue was patched in ALAS2-2021-1653.

NVD Description

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

curl 7.7 through 7.76.1 suffers from an information disclosure when the -t command line option, known as CURLOPT_TELNETOPTIONS in libcurl, is used to send variable=content pairs to TELNET servers. Due to a flaw in the option parser for sending NEW_ENV variables, libcurl could be made to pass on uninitialized data from a stack based buffer to the server, resulting in potentially revealing sensitive internal information to the server using a clear-text network protocol.

References

CVSS Scores

version 3.1
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NVD

3.1 low
  • 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
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Red Hat

3.1 low
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SUSE

5.3 medium