Leostream Connection Broker 8.2 /index.pl User cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Leostream Connection Broker. Affected by this issue is some unknown functionality of the file /index.pl. Performing a manipulation of the argument User results in cross site scripting. This vulnerability is identified as CVE-2021-38157. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Leostream Connection Broker. This affects some unknown processing of the file /index.pl. The manipulation of the argument user with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

LeoStream Connection Broker 9.x before 9.0.34.3 allows Unauthenticated Reflected XSS via the /index.pl user parameter. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

The weakness was released 08/07/2021. It is possible to read the advisory at gist.github.com. This vulnerability is uniquely identified as CVE-2021-38157. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 9.0.34.3 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

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

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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: Connection Broker 9.0.34.3

Timelineinfo

08/06/2021 🔍
08/07/2021 +1 days 🔍
08/07/2021 +0 days 🔍
05/03/2025 +1365 days 🔍

Sourcesinfo

Advisory: gist.github.com
Status: Confirmed

CVE: CVE-2021-38157 (🔍)
GCVE (CVE): GCVE-0-2021-38157
GCVE (VulDB): GCVE-100-180291

Entryinfo

Created: 08/07/2021 06:39
Updated: 05/03/2025 14:09
Changes: 08/07/2021 06:39 (38), 08/10/2021 15:46 (2), 06/05/2024 10:30 (33), 06/05/2024 13:24 (3), 05/03/2025 14:09 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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