CVE-2023-40217

Updated: 2023-11-07 20:07:40.901183

Description:

An issue was discovered in Python before 3.8.18, 3.9.x before 3.9.18, 3.10.x before 3.10.13, and 3.11.x before 3.11.5. It primarily affects servers (such as HTTP servers) that use TLS client authentication. If a TLS server-side socket is created, receives data into the socket buffer, and then is closed quickly, there is a brief window where the SSLSocket instance will detect the socket as "not connected" and won't initiate a handshake, but buffered data will still be readable from the socket buffer. This data will not be authenticated if the server-side TLS peer is expecting client certificate authentication, and is indistinguishable from valid TLS stream data. Data is limited in size to the amount that will fit in the buffer. (The TLS connection cannot directly be used for data exfiltration because the vulnerable code path requires that the connection be closed on initialization of the SSLSocket.)


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x 0
CVSS Version 3.x MEDIUM 5.3

Status

OS name Project name Version Score Severity Status Errata Last updated
AlmaLinux 9.2 ESU python3 3.9.16 5.3 MEDIUM Ignored 2023-11-08 04:07:50
CentOS 6 ELS python 2.6.6 5.3 MEDIUM Released CLSA-2024:1705079922 2024-01-22 13:15:02
CentOS 7 ELS python3 3.6.8 5.3 MEDIUM In Testing 2024-02-23 13:15:31
CentOS 7 ELS python 2.7.5 5.3 MEDIUM In Testing 2024-02-23 13:15:31
CentOS 8.4 ELS python3 3.6.8 5.3 MEDIUM Ignored 2023-09-01 05:05:50
CentOS 8.4 ELS python2 2.7.18 5.3 MEDIUM Released CLSA-2023:1701971396 2023-12-07 13:14:54
CentOS 8.5 ELS python3 3.6.8 5.3 MEDIUM Ignored 2023-09-01 05:05:50
CentOS 8.5 ELS python2 2.7.18 5.3 MEDIUM Released CLSA-2023:1701971558 2023-12-07 13:14:53
CloudLinux 6 ELS python 2.6.6 5.3 MEDIUM Released CLSA-2024:1705081326 2024-01-22 13:15:03
Oracle Linux 6 ELS python 2.6.6 5.3 MEDIUM Released CLSA-2024:1705080095 2024-01-12 13:14:48
Total: 14