SB2020110533 - Denial of service in Cisco Unified Communications Manager IM & Presence Service
Published: November 5, 2020
Security Bulletin ID
SB2020110533
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Uncaught Exception (CVE-ID: CVE-2020-27121)
CWE-ID: CWE-248 - Uncaught Exception
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper handling of login requests. A remote authenticated attacker can send a specially crafted client login request and cause a denial of service condition on the target system.
Remediation
Install update from vendor's website.