Improper Input Validation Affecting curl package, versions <7.34.0-1


Severity

0.0
medium
0
10

    Threat Intelligence

    EPSS
    0.25% (65th percentile)

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  • Snyk ID SNYK-DEBIAN12-CURL-1544088
  • published 23 Dec 2013
  • disclosed 23 Dec 2013

How to fix?

Upgrade Debian:12 curl to version 7.34.0-1 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 Debian. See How to fix? for Debian:12 relevant fixed versions and status.

The GnuTLS backend in libcurl 7.21.4 through 7.33.0, when disabling digital signature verification (CURLOPT_SSL_VERIFYPEER), also disables the CURLOPT_SSL_VERIFYHOST check for CN or SAN host name fields, which makes it easier for remote attackers to spoof servers and conduct man-in-the-middle (MITM) attacks.

CVSS Scores

version 3.1
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Snyk

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

4.8 medium
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Red Hat

3.7 low