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Directory Traversal Affecting curl package, versions <7.68.0-1ubuntu2.18

low

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.15% (51st percentile)
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NVD
8.8 high
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SUSE
4.5 medium
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Red Hat
3.7 low

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  • Snyk ID SNYK-UBUNTU2004-CURL-3364978
  • published 20 Mar 2023
  • disclosed 30 Mar 2023
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Introduced: 20 Mar 2023

CVE-2023-27534 Open this link in a new tab
CWE-22 Open this link in a new tab

How to fix?

Upgrade Ubuntu:20.04 curl to version 7.68.0-1ubuntu2.18 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 Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

A path traversal vulnerability exists in curl <8.0.0 SFTP implementation causes the tilde () character to be wrongly replaced when used as a prefix in the first path element, in addition to its intended use as the first element to indicate a path relative to the user's home directory. Attackers can exploit this flaw to bypass filtering or execute arbitrary code by crafting a path like /2/foo while accessing a server with a specific user.