Cisco Unified Communications Manager IM and Presence Service DoS (cisco-sa-imp-dos-uTx2dqu2)

Medium Nessus Plugin ID 142496

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VPR Score: 3.6


The remote device is missing a vendor-supplied security patch.


According to its self-reported version, Cisco Unified Communications Manager IM and Presence Service is affected by a vulnerability due to improper handling of login requests. An authenticated, remote attacker can exploit this, by sending a crafted client login request to an affected device, in order to cause the Cisco XCP Authentication Service to restart, resulting in a DoS condition for new login attempts.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.


Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvv75814

See Also

Plugin Details

Severity: Medium

ID: 142496

File Name: cisco-sa-imp-dos-uTx2dqu2.nasl

Version: 1.5

Type: combined

Family: CISCO

Published: 2020/11/06

Updated: 2020/11/24

Dependencies: 142662

Risk Information

Risk Factor: Medium

VPR Score: 3.6

CVSS Score Source: CVE-2020-27121

CVSS v2.0

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:cisco:unified_communications_manager_im_and_presence_service

Required KB Items: installed_sw/Cisco Unified CM IM&P

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/11/04

Vulnerability Publication Date: 2020/11/04

Reference Information

CVE: CVE-2020-27121


CISCO-SA: cisco-sa-imp-dos-uTx2dqu2

IAVA: 2020-A-0504