CVE-2021-20038
Scores
EPSS
Percentile: 94.3%
CVSS
CVSS Score: 9.8/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
None (N)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
High (H)
Measures the impact to the confidentiality of information
Integrity Impact
High (H)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Authentication
None (N)
Describes the level of privileges an attacker must possess
Confidentiality Impact
Partial
Measures the impact to the confidentiality of information
Integrity Impact
Partial
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Partial
Measures the impact to the availability of the impacted component
Description
A Stack-based buffer overflow vulnerability in SMA100 Apache httpd server’s mod_cgi module environment variables allows a remote unauthenticated attacker to potentially execute code as a ‘nobody’ user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances firmware 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv and earlier versions.
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Sources
CWEs
Related Vulnerabilities
Exploits
Exploit ID: CVE-2021-20038
Source: github-poc
URL: https://github.com/vesperp/CVE-2021-20038-SonicWall-RCE
Vulnerable Software (5)
Type: Configuration
Vendor: sonicwall
Product: sma_200_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:sonicwall:sma_200_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*", "vulnerable": true }, { ...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:sonicwall:sma_200_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:sonicwall:sma_200_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:sonicwall:sma_200_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:sonicwall:sma_200:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: sonicwall
Product: sma_210_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:sonicwall:sma_210_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*", "vulnerable": true }, { ...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:sonicwall:sma_210_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:sonicwall:sma_210_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:sonicwall:sma_210_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:sonicwall:sma_210:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: sonicwall
Product: sma_400_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:sonicwall:sma_400_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*", "vulnerable": true }, { ...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:sonicwall:sma_400_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:sonicwall:sma_400_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:sonicwall:sma_400_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:sonicwall:sma_400:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: sonicwall
Product: sma_410_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:sonicwall:sma_410_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*", "vulnerable": true }, { ...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:sonicwall:sma_410_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:sonicwall:sma_410_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:sonicwall:sma_410_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:sonicwall:sma_410:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: sonicwall
Product: sma_500v_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*", "vulnerable": true }, { ...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:sonicwall:sma_500v:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd