Apache Tomcat up to 8.5.63/9.0.43/10.0.2 TLS Packet infinite loop

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.
5.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Apache Tomcat up to 8.5.63/9.0.43/10.0.2. Affected by this vulnerability is an unknown functionality of the component TLS Packet Handler. Such manipulation leads to infinite loop. This vulnerability is listed as CVE-2021-41079. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Apache Tomcat up to 8.5.63/9.0.43/10.0.2 (Application Server Software). It has been rated as problematic. Affected by this issue is an unknown function of the component TLS Packet Handler. The manipulation with an unknown input leads to a infinite loop vulnerability. Using CWE to declare the problem leads to CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. Impacted is availability.

The weakness was presented 09/16/2021. The advisory is available at lists.apache.org. This vulnerability is handled as CVE-2021-41079 since 09/15/2021. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/16/2021). This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

CVSSv2info

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

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/15/2021 🔍
09/16/2021 +1 days 🔍
09/16/2021 +0 days 🔍
09/19/2021 +3 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: lists.apache.org
Status: Confirmed

CVE: CVE-2021-41079 (🔍)
GCVE (CVE): GCVE-0-2021-41079
GCVE (VulDB): GCVE-100-182798

Entryinfo

Created: 09/16/2021 22:10
Updated: 09/19/2021 14:53
Changes: 09/16/2021 22:10 (38), 09/19/2021 14:53 (1)
Complete: 🔍
Cache ID: 216::103

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