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ID

VAR-202011-0728


CVE

CVE-2020-27121


TITLE

Cisco Unified Communications Manager IM & Presence Service  Software vulnerabilities in handling exceptional conditions

Trust: 0.8

sources: JVNDB: JVNDB-2020-013390

DESCRIPTION

A vulnerability in Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P) Software could allow an authenticated, remote attacker to cause the Cisco XCP Authentication Service on an affected device to restart, resulting in a denial of service (DoS) condition. The vulnerability is due to improper handling of login requests. An attacker could exploit this vulnerability by sending a crafted client login request to an affected device. A successful exploit could allow the attacker to cause a process to crash, resulting in a DoS condition for new login attempts. Users who are authenticated at the time of the attack would not be affected. There are workarounds that address this vulnerability. This component provides a scalable, distributed and highly available enterprise IP telephony call processing solution

Trust: 1.71

sources: NVD: CVE-2020-27121 // JVNDB: JVNDB-2020-013390 // VULHUB: VHN-370489

AFFECTED PRODUCTS

vendor:ciscomodel:unified communications manager im and presence servicescope:eqversion:12.5\(1\)

Trust: 1.0

vendor:シスコシステムズmodel:cisco unified communications manager im and presence servicescope:eqversion: -

Trust: 0.8

sources: JVNDB: JVNDB-2020-013390 // NVD: CVE-2020-27121

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2020-27121
value: MEDIUM

Trust: 1.0

ykramarz@cisco.com: CVE-2020-27121
value: MEDIUM

Trust: 1.0

NVD: CVE-2020-27121
value: MEDIUM

Trust: 0.8

CNNVD: CNNVD-202011-313
value: MEDIUM

Trust: 0.6

VULHUB: VHN-370489
value: MEDIUM

Trust: 0.1

nvd@nist.gov: CVE-2020-27121
severity: MEDIUM
baseScore: 4.0
vectorString: AV:N/AC:L/AU:S/C:N/I:N/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: SINGLE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: PARTIAL
exploitabilityScore: 8.0
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.8

VULHUB: VHN-370489
severity: MEDIUM
baseScore: 4.0
vectorString: AV:N/AC:L/AU:S/C:N/I:N/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: SINGLE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: PARTIAL
exploitabilityScore: 8.0
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

nvd@nist.gov: CVE-2020-27121
baseSeverity: MEDIUM
baseScore: 6.5
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: 2.8
impactScore: 3.6
version: 3.1

Trust: 1.0

ykramarz@cisco.com: CVE-2020-27121
baseSeverity: MEDIUM
baseScore: 4.3
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: LOW
exploitabilityScore: 2.8
impactScore: 1.4
version: 3.1

Trust: 1.0

NVD: CVE-2020-27121
baseSeverity: MEDIUM
baseScore: 6.5
vectorString: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: VULHUB: VHN-370489 // JVNDB: JVNDB-2020-013390 // CNNVD: CNNVD-202011-313 // NVD: CVE-2020-27121 // NVD: CVE-2020-27121

PROBLEMTYPE DATA

problemtype:CWE-755

Trust: 1.1

problemtype:CWE-248

Trust: 1.0

problemtype:Improper handling in exceptional conditions (CWE-755) [NVD Evaluation ]

Trust: 0.8

sources: VULHUB: VHN-370489 // JVNDB: JVNDB-2020-013390 // NVD: CVE-2020-27121

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202011-313

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202011-313

PATCH

title:cisco-sa-imp-dos-uTx2dqu2url:https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-imp-dos-uTx2dqu2

Trust: 0.8

title:Cisco Unified Communications Manager and Service Security vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=132750

Trust: 0.6

sources: JVNDB: JVNDB-2020-013390 // CNNVD: CNNVD-202011-313

EXTERNAL IDS

db:NVDid:CVE-2020-27121

Trust: 2.5

db:JVNDBid:JVNDB-2020-013390

Trust: 0.8

db:CNNVDid:CNNVD-202011-313

Trust: 0.7

db:AUSCERTid:ESB-2020.3839

Trust: 0.6

db:CNVDid:CNVD-2020-64303

Trust: 0.1

db:VULHUBid:VHN-370489

Trust: 0.1

sources: VULHUB: VHN-370489 // JVNDB: JVNDB-2020-013390 // CNNVD: CNNVD-202011-313 // NVD: CVE-2020-27121

REFERENCES

url:https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-imp-dos-utx2dqu2

Trust: 2.3

url:https://nvd.nist.gov/vuln/detail/cve-2020-27121

Trust: 1.4

url:https://vigilance.fr/vulnerability/cisco-unified-communications-manager-im-and-presence-service-denial-of-service-via-xcp-33814

Trust: 0.6

url:https://www.auscert.org.au/bulletins/esb-2020.3839/

Trust: 0.6

sources: VULHUB: VHN-370489 // JVNDB: JVNDB-2020-013390 // CNNVD: CNNVD-202011-313 // NVD: CVE-2020-27121

SOURCES

db:VULHUBid:VHN-370489
db:JVNDBid:JVNDB-2020-013390
db:CNNVDid:CNNVD-202011-313
db:NVDid:CVE-2020-27121

LAST UPDATE DATE

2024-08-14T15:38:14.711000+00:00


SOURCES UPDATE DATE

db:VULHUBid:VHN-370489date:2020-11-20T00:00:00
db:JVNDBid:JVNDB-2020-013390date:2021-06-29T08:35:00
db:CNNVDid:CNNVD-202011-313date:2021-08-16T00:00:00
db:NVDid:CVE-2020-27121date:2023-11-07T03:20:47.470

SOURCES RELEASE DATE

db:VULHUBid:VHN-370489date:2020-11-06T00:00:00
db:JVNDBid:JVNDB-2020-013390date:2021-06-29T00:00:00
db:CNNVDid:CNNVD-202011-313date:2020-11-04T00:00:00
db:NVDid:CVE-2020-27121date:2020-11-06T19:15:13.360