CVE-2020-13863: 
Mitel MiCollab vulnerability analysis and mitigation

The SAS portal of Mitel MiCollab before version 9.1.3 contained a security vulnerability that could allow an attacker to access user data through header injection in HTTP responses. The vulnerability (CVE-2020-13863) was discovered and disclosed in August 2020, affecting the MiCollab application's handling of input parameters (Vendor Advisory).

The vulnerability stems from improper handling of input parameters in the SAS portal, which could allow header injection in HTTP responses. The issue received a CVSS v3.1 base score of 8.1 (HIGH) with a vector string of CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H. Under CVSS v2.0, it received a score of 5.5 (MEDIUM) with vector (AV:N/AC:L/Au:S/C:P/I:N/A:P) (NVD).

A successful exploitation of this vulnerability could allow an attacker to access user information and data stored in the MiCollab system. The vulnerability primarily affects the confidentiality and availability of the system, as indicated by the CVSS scoring (NVD).

The vulnerability requires network access and low privilege level for exploitation, with no user interaction needed, as indicated by the CVSS vector string. The attack complexity is considered low, making it relatively straightforward to exploit once an attacker has the required access level (NVD).

Mitel has addressed this vulnerability by releasing version 9.1.3 of MiCollab. The vendor recommends that customers update their software to the latest version to mitigate the risk. This fix was provided through a security update released by Mitel (Vendor Advisory).