Out-of-Bounds Affecting curl package, versions <7.55.0-1


Severity

0.0
medium
0
10

    Threat Intelligence

    EPSS
    0.33% (71st percentile)

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  • Snyk ID SNYK-DEBIAN12-CURL-1544188
  • published 5 Oct 2017
  • disclosed 5 Oct 2017

How to fix?

Upgrade Debian:12 curl to version 7.55.0-1 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.

curl supports "globbing" of URLs, in which a user can pass a numerical range to have the tool iterate over those numbers to do a sequence of transfers. In the globbing function that parses the numerical range, there was an omission that made curl read a byte beyond the end of the URL if given a carefully crafted, or just wrongly written, URL. The URL is stored in a heap based buffer, so it could then be made to wrongly read something else instead of crashing. An example of a URL that triggers the flaw would be http://ur%20[0-60000000000000000000.

CVSS Scores

version 3.1
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Snyk

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

6.5 medium
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Red Hat

4.2 medium