KLog Server up to 2.4.1 async.php shell_exec Source command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in KLog Server up to 2.4.1. Affected by this issue is the function shell_exec of the file async.php. Executing a manipulation of the argument Source can lead to command injection. This vulnerability is handled as CVE-2021-3317. The attack can be executed remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability classified as critical was found in KLog Server up to 2.4.1. This vulnerability affects the function shell_exec of the file async.php. The manipulation of the argument source with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 01/27/2021. The advisory is shared for download at docs.unsafe-inline.com. This vulnerability was named CVE-2021-3317. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1202.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. By approaching the search of inurl:async.php it is possible to find vulnerable targets with Google Hacking.

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

The vulnerability is also documented in the vulnerability database at Exploit-DB (49511). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/26/2021 🔍
01/27/2021 +1 days 🔍
01/27/2021 +0 days 🔍
12/21/2024 +1424 days 🔍

Sourcesinfo

Advisory: docs.unsafe-inline.com
Status: Not defined

CVE: CVE-2021-3317 (🔍)
GCVE (CVE): GCVE-0-2021-3317
GCVE (VulDB): GCVE-100-168796
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 01/27/2021 12:38
Updated: 12/21/2024 03:05
Changes: 01/27/2021 12:38 (38), 02/20/2021 19:04 (2), 02/20/2021 19:07 (18), 12/21/2024 03:05 (25)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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