VDB-174330 · CVE-2021-1501 · GCVE-0-2021-1501

Cisco ASA/Firepower Threat Defense SIP Inspection Engine denial of service

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.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Cisco ASA and Firepower Threat Defense. This affects an unknown part of the component SIP Inspection Engine. The manipulation results in denial of service. This vulnerability is known as CVE-2021-1501. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Cisco ASA and Firepower Threat Defense (Firewall Software) (affected version not known). Affected is some unknown functionality of the component SIP Inspection Engine. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The weakness was published 04/30/2021 as cisco-sa-asa-ftd-sipdos-GGwmMerC. The advisory is available at tools.cisco.com. This vulnerability is traded as CVE-2021-1501. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Firewall Software

Vendor

Cisco

Name

License

commercial

Website

Vendor: https://www.cisco.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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

11/13/2020 🔍
04/30/2021 +167 days 🔍
04/30/2021 +0 days 🔍
07/28/2023 +819 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-asa-ftd-sipdos-GGwmMerC
Status: Confirmed

CVE: CVE-2021-1501 (🔍)
GCVE (CVE): GCVE-0-2021-1501
GCVE (VulDB): GCVE-100-174330

Entryinfo

Created: 04/30/2021 06:47
Updated: 07/28/2023 15:09
Changes: 04/30/2021 06:47 (38), 05/03/2021 15:00 (5), 05/03/2021 15:03 (1), 07/28/2023 15:09 (2)
Complete: 🔍
Cache ID: 216::103