Directory Traversal Affecting libcurl-devel package, versions <0:8.0.1-1.amzn2.0.1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
2.2% (81st percentile)

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  • Snyk IDSNYK-AMZN2-LIBCURLDEVEL-5671911
  • published8 Jun 2023
  • disclosed30 Mar 2023

Introduced: 30 Mar 2023

CVE-2023-27534  (opens in a new tab)
CWE-22  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 libcurl-devel to version 0:8.0.1-1.amzn2.0.1 or higher.
This issue was patched in ALAS2-2023-2070.

NVD Description

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

CVSS Base Scores

version 3.1