Improper Authentication Affecting libcurl4 package, versions <7.60.0-150000.51.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
1.8% (79th percentile)

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  • Snyk IDSNYK-SLES151-LIBCURL4-5562039
  • published18 May 2023
  • disclosed17 May 2023

Introduced: 17 May 2023

CVE-2023-27535  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade SLES:15.1 libcurl4 to version 7.60.0-150000.51.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcurl4 package and not the libcurl4 package as distributed by SLES. See How to fix? for SLES:15.1 relevant fixed versions and status.

An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.

CVSS Base Scores

version 3.1