Backstage up to 0.4.8 auth-backend Plugin 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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5.9$0-$5k0.00

Summaryinfo

A vulnerability has been found in Backstage up to 0.4.8 and classified as problematic. The affected element is an unknown function of the component auth-backend Plugin. Performing a manipulation results in cross site scripting. This vulnerability is identified as CVE-2021-43776. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Backstage up to 0.4.8. This affects an unknown part of the component auth-backend Plugin. The manipulation 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 weakness was released 11/27/2021 as GHSA-w7fj-336r-vw49. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2021-43776 since 11/16/2021. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 0.4.9 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

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

NVD Base Score: 6.1
NVD Vector: 🔍

CNA Base Score: 7.4
CNA Vector (GitHub, Inc.): 🔍

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: 🔍
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: Backstage 0.4.9

Timelineinfo

11/16/2021 🔍
11/27/2021 +11 days 🔍
11/27/2021 +0 days 🔍
12/02/2021 +5 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-w7fj-336r-vw49
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-43776 (🔍)
GCVE (CVE): GCVE-0-2021-43776
GCVE (VulDB): GCVE-100-187281

Entryinfo

Created: 11/27/2021 03:20
Updated: 12/02/2021 12:17
Changes: 11/27/2021 03:20 (49), 12/02/2021 12:03 (2), 12/02/2021 12:10 (18), 12/02/2021 12:17 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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