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Sametime is impacted by a failure to invalidate sessions.  The application is setting sensitive cookie values in a persistent manner in Sametime Web clients. When this happens, cookie values can remain valid even after a user has closed out their session.

CVE-2023-45718 is a vulnerability identified in HCL Software's HCL Sametime product, affecting versions 11.5 through 12.0.1 FP1. The core issue arises from the application's failure to properly invalidate session cookies in Sametime Web clients. Specifically, sensitive cookie values are set in a persistent manner, meaning that these cookies remain valid even after a user has explicitly closed their session. This behavior violates secure session management best practices and corresponds to CWE-613 (Insufficient Session Expiration). The vulnerability allows an attacker with access to a user's device or browser to potentially reuse these persistent cookies to impersonate the user without needing to re-authenticate. The CVSS v3.1 base score is 3.9, indicating a low severity level. The vector string (CVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N) shows that the attack requires physical access (AV:P), high attack complexity (AC:H), low privileges (PR:L), and user interaction (UI:R). The impact is primarily on confidentiality, as an attacker could gain unauthorized access to sensitive information by hijacking the session. There is no impact on integrity or availability. No known exploits are currently reported in the wild, and no patches or mitigation links are provided in the source data. The vulnerability is significant in environments where devices are shared or physically accessible by multiple users, increasing the risk of session hijacking through persistent cookies. Organizations using affected versions of HCL Sametime should be aware of this risk and consider compensating controls until official patches are available.

Detailed information about CVE-2023-45718: Vulnerability in HCL Software HCL Sametime affecting HCL Software HCL Sametime. Get real-time updates, technical deta

CVE-2023-45718: Vulnerability in HCL Software HCL Sametime - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-45718: Vulnerability in HCL Software HCL Sametime

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