Cisco Catalyst Passive Optical Network Switch Web-based Management Interface access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.7	$0-$5k	0.00

A vulnerability has been found in Cisco Catalyst Passive Optical Network Switch (version now known) and classified as very critical. This vulnerability affects some unknown processing of the component Web-based Management Interface. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 11/04/2021 as cisco-sa-catpon-multivulns-CE3DSYGr. The advisory is shared for download at tools.cisco.com. This vulnerability was named CVE-2021-34795 since 06/15/2021. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/09/2021). The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading eliminates this vulnerability.

The entries VDB-186053 and VDB-186054 are pretty similar.

Productinfo

Vendor

Cisco

Name

Catalyst Passive Optical Network Switch

License

commercial

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.7

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 10.0
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/15/2021 🔍
11/04/2021 +142 days 🔍
11/04/2021 +0 days 🔍
11/09/2021 +5 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-catpon-multivulns-CE3DSYGr
Status: Confirmed

CVE: CVE-2021-34795 (🔍)
See also: 🔍

Entryinfo

Created: 11/04/2021 20:13
Updated: 11/09/2021 15:38
Changes: 11/04/2021 20:13 (48), 11/09/2021 15:32 (1), 11/09/2021 15:38 (16)
Complete: 🔍
Cache ID: 3:E4E:103