CVE-2021-3317 - Vulnerability Details - OpenCVE

Description

KLog Server through 2.4.1 allows authenticated command injection. async.php calls shell_exec() on the original value of the source parameter.

Published: 2021-01-26

Score: 8.8 High

EPSS: 41.4% Moderate

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:klogserver:klog_server:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.41394.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://packetstormsecurity.com/files/161208/Klog-Server-2.4.1-Command-Injection.html
https://docs.unsafe-inline.com/0day/klog-server-authenticated-command-injection

History

No history.

Subscriptions

Klogserver Klog Server

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-01-26T22:33:58.000Z

Updated: 2024-08-03T16:53:17.450Z

Reserved: 2021-01-26T00:00:00.000Z

Link: CVE-2021-3317

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-01-26T23:15:13.047

Modified: 2026-06-17T04:04:55.823

Link: CVE-2021-3317

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "KLog Server through 2.4.1 allows authenticated command injection. async.php calls shell_exec() on the original value of the source parameter."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-02-01T18:06:15.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://docs.unsafe-inline.com/0day/klog-server-authenticated-command-injection"}, {"tags": ["x_refsource_MISC"], "url": "http://packetstormsecurity.com/files/161208/Klog-Server-2.4.1-Command-Injection.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-3317", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "KLog Server through 2.4.1 allows authenticated command injection. async.php calls shell_exec() on the original value of the source parameter."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://docs.unsafe-inline.com/0day/klog-server-authenticated-command-injection", "refsource": "MISC", "url": "https://docs.unsafe-inline.com/0day/klog-server-authenticated-command-injection"}, {"name": "http://packetstormsecurity.com/files/161208/Klog-Server-2.4.1-Command-Injection.html", "refsource": "MISC", "url": "http://packetstormsecurity.com/files/161208/Klog-Server-2.4.1-Command-Injection.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T16:53:17.450Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://docs.unsafe-inline.com/0day/klog-server-authenticated-command-injection"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://packetstormsecurity.com/files/161208/Klog-Server-2.4.1-Command-Injection.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-3317", "datePublished": "2021-01-26T22:33:58.000Z", "dateReserved": "2021-01-26T00:00:00.000Z", "dateUpdated": "2024-08-03T16:53:17.450Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:klogserver:klog_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "9DF21B2F-E9C3-417D-83D8-6581A39CEC8E", "versionEndIncluding": "2.4.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "KLog Server through 2.4.1 allows authenticated command injection. async.php calls shell_exec() on the original value of the source parameter."}, {"lang": "es", "value": "KLog Server versiones hasta 2.4.1, permite una inyecci\u00f3n de comandos autenticada. El archivo async.php llama a la funci\u00f3n shell_exec() en el valor original del par\u00e1metro source"}], "id": "CVE-2021-3317", "lastModified": "2026-06-17T04:04:55.823", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-01-26T23:15:13.047", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "http://packetstormsecurity.com/files/161208/Klog-Server-2.4.1-Command-Injection.html"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://docs.unsafe-inline.com/0day/klog-server-authenticated-command-injection"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "http://packetstormsecurity.com/files/161208/Klog-Server-2.4.1-Command-Injection.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://docs.unsafe-inline.com/0day/klog-server-authenticated-command-injection"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "nvd@nist.gov", "type": "Primary"}]}