CVE-2023-27536
- State
- Published
- Severity
- 5.9 Medium
- Published
- Mar 30, 2023
- Updated
- Oct 14, 2026
- Reserved
- Mar 2, 2023
Description
An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.9 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | CISA-ADP |
Weaknesses
- CWE-305 Authentication Bypass by Primary Weakness (CWE-305)
Affected Products
| Product | Versions |
|---|---|
https://github.com/curl/curln/a |
|
References
- https://hackerone.com/reports/1895135
- FEDORA-2023-7e7414e64dvendor-advisory
- https://security.netapp.com/advisory/ntap-20230420-0010/
- [debian-lts-announce] 20230421 [SECURITY] [DLA 3398-1] curl security updatemailing-list
- GLSA-202310-12vendor-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-806742.html
- https://cert-portal.siemens.com/productcert/html/ssa-943925.html
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