GNUBOARD5 up to 5.3.2.8 bbs/login.php url 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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4.7$0-$5k0.00

Summaryinfo

A vulnerability was found in GNUBOARD5 up to 5.3.2.8. It has been classified as problematic. This issue affects some unknown processing of the file bbs/login.php. This manipulation of the argument url causes cross site scripting. This vulnerability is handled as CVE-2020-18661. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability has been found in GNUBOARD5 up to 5.3.2.8 (Forum Software) and classified as problematic. Affected by this vulnerability is an unknown code block of the file bbs/login.php. The manipulation of the argument url with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity.

The weakness was released 06/24/2021. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2020-18661. It demands that the victim is doing some kind of user interaction. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. By approaching the search of inurl:bbs/login.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.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.5
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
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: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/13/2020 🔍
06/24/2021 +315 days 🔍
06/24/2021 +0 days 🔍
05/03/2025 +1409 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2020-18661 (🔍)
GCVE (CVE): GCVE-0-2020-18661
GCVE (VulDB): GCVE-100-177511
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/24/2021 20:29
Updated: 05/03/2025 17:41
Changes: 06/24/2021 20:29 (20), 06/24/2021 20:30 (20), 06/26/2021 20:00 (2), 09/19/2024 14:19 (33), 05/03/2025 17:41 (3)
Complete: 🔍
Cache ID: 216::103

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