Squid Web Proxy up to 4.14/5.0.5 HTTP Range Request 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 (≈)
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Squid Web Proxy up to 4.14/5.0.5. The affected element is an unknown function of the component HTTP Range Request Handler. Such manipulation leads to denial of service. This vulnerability is traded as CVE-2021-31807. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Squid Web Proxy up to 4.14/5.0.5 (Firewall Software). It has been rated as problematic. Affected by this issue is an unknown functionality of the component HTTP Range Request Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was shared 06/09/2021. The advisory is available at github.com. This vulnerability is handled as CVE-2021-31807. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 4.15 or 5.0.6 eliminates this vulnerability. The upgrade is hosted for download at squid-cache.org.

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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: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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: 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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Web Proxy 4.15/5.0.6

Timelineinfo

04/26/2021 🔍
06/09/2021 +44 days 🔍
06/09/2021 +0 days 🔍
06/11/2021 +2 days 🔍

Sourcesinfo

Vendor: squid-cache.org

Advisory: github.com
Status: Confirmed

CVE: CVE-2021-31807 (🔍)
GCVE (CVE): GCVE-0-2021-31807
GCVE (VulDB): GCVE-100-176534

Entryinfo

Created: 06/09/2021 08:05
Updated: 06/11/2021 09:35
Changes: 06/09/2021 08:05 (40), 06/11/2021 09:35 (5)
Complete: 🔍
Cache ID: 216::103

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