SonicWALL SonicOS 5/6/7 HTTP Content-Length stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in SonicWALL SonicOS 5/6/7. It has been classified as critical. The impacted element is an unknown function of the component HTTP Content-Length Handler. The manipulation leads to stack-based overflow. This vulnerability is referenced as CVE-2021-20046. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in SonicWALL SonicOS 5/6/7 (Firewall Software). It has been rated as critical. This issue affects an unknown code block of the component HTTP Content-Length Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is availability.

The weakness was published 01/10/2022 as SNWLID-2021-0027. The advisory is shared at psirt.global.sonicwall.com. The identification of this vulnerability is CVE-2021-20046 since 12/17/2020. Neither technical details nor an exploit are publicly available.

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

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Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 6.5
VulDB Temp Score: 6.5
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: Stack-based overflow
CWE: CWE-121 / 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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/17/2020 🔍
01/10/2022 +389 days 🔍
01/10/2022 +0 days 🔍
01/12/2022 +2 days 🔍

Sourcesinfo

Vendor: sonicwall.com

Advisory: SNWLID-2021-0027
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-20046 (🔍)
GCVE (CVE): GCVE-0-2021-20046
GCVE (VulDB): GCVE-100-189845

Entryinfo

Created: 01/10/2022 16:59
Updated: 01/12/2022 08:27
Changes: 01/10/2022 16:59 (39), 01/12/2022 08:27 (2)
Complete: 🔍
Cache ID: 216::103

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