CVE-2023-27535 is an authentication bypass vulnerability in libcurl versions prior to 8.0.0, affecting products like Debian, Fedora, NetApp, and Splunk. It allows for the reuse of FTP connections with incorrect credentials due to insufficient configuration matching, potentially leading to unauthorized access to sensitive information. Rated Medium severity (CVSS 5.9), this vulnerability has a network attack vector and high confidentiality impact, but requires high attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 7.13.0, <= 7.88.1CPE matchmatch criteria | cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:* | ||
36CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:netapp:ontap_9:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
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The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
CVE-2023-27535
Nov 12, 2024August Third Party Package Updates in Splunk Universal Forwarder
Aug 30, 2023curl: FTP too eager connection reuse
Mar 20, 2023FTP too eager connection reuse
Mar 20, 2023An 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.
Mar 14, 2023