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Information Exposure Affecting libcurl package, versions <0:7.61.1-12.amzn2.0.4

Severity

 Recommended
medium

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    0.93% (84th percentile)

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  • Snyk ID SNYK-AMZN2-LIBCURL-1699125
  • published 27 Sep 2021
  • disclosed 1 Apr 2021
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Introduced: 1 Apr 2021

CVE-2021-22876 Open this link in a new tab
CWE-200 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 7.1.1 to and including 7.75.0 is vulnerable to an "Exposure of Private Personal Information to an Unauthorized Actor" by leaking credentials in the HTTP Referer: header. libcurl does not strip off user credentials from the URL when automatically populating the Referer: HTTP request header field in outgoing HTTP requests, and therefore risks leaking sensitive data to the server that is the target of the second HTTP request.

References

CVSS Scores

version 3.1
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NVD

5.3 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    None
  • Availability (A)
    None
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Red Hat

3.7 low
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SUSE

6.1 medium