Cisco ASA/Firepower Threat Defense HTTPS Request out-of-bounds write

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 (≈)
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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-$5k0.00

Summaryinfo

A vulnerability has been found in Cisco ASA and Firepower Threat Defense and classified as critical. This vulnerability affects unknown code of the component HTTPS Request Handler. This manipulation causes out-of-bounds write. This vulnerability is handled as CVE-2021-1504. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Cisco ASA and Firepower Threat Defense (Firewall Software) (the affected version unknown). Affected by this vulnerability is an unknown part of the component HTTPS Request Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability.

The weakness was released 04/30/2021 as cisco-sa-asa-ftd-vpn-dos-fpBcpEcD. It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2021-1504. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/28/2023).

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

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

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

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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-vpn-dos-fpBcpEcD
Status: Confirmed

CVE: CVE-2021-1504 (🔍)
GCVE (CVE): GCVE-0-2021-1504
GCVE (VulDB): GCVE-100-174331

Entryinfo

Created: 04/30/2021 06:48
Updated: 07/28/2023 15:08
Changes: 04/30/2021 06:48 (38), 05/03/2021 15:04 (5), 05/03/2021 15:06 (1), 07/28/2023 15:08 (2)
Complete: 🔍
Cache ID: 216::103

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