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Vulnerability Details :

CVE-2021-32764

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-15 Jul, 2021 | 20:40
Updated At-03 Aug, 2024 | 23:33
Rejected At-
Credits

YouTube Onebox susceptible to XSS

Discourse is an open-source discussion platform. In Discourse versions 2.7.5 and prior, parsing and rendering of YouTube Oneboxes can be susceptible to XSS attacks. This vulnerability only affects sites which have modified or disabled Discourse's default Content Security Policy. The issue is patched in `stable` version 2.7.6, `beta` version 2.8.0.beta3, and `tests-passed` version 2.8.0.beta3. As a workaround, ensure that the Content Security Policy is enabled, and has not been modified in a way which would make it more vulnerable to XSS attacks.

Vendors
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Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:15 Jul, 2021 | 20:40
Updated At:03 Aug, 2024 | 23:33
Rejected At:
▼CVE Numbering Authority (CNA)
YouTube Onebox susceptible to XSS

Discourse is an open-source discussion platform. In Discourse versions 2.7.5 and prior, parsing and rendering of YouTube Oneboxes can be susceptible to XSS attacks. This vulnerability only affects sites which have modified or disabled Discourse's default Content Security Policy. The issue is patched in `stable` version 2.7.6, `beta` version 2.8.0.beta3, and `tests-passed` version 2.8.0.beta3. As a workaround, ensure that the Content Security Policy is enabled, and has not been modified in a way which would make it more vulnerable to XSS attacks.

Affected Products
Vendor
Civilized Discourse Construction Kit, Inc.discourse
Product
discourse
Versions
Affected
  • <= 2.7.5
Problem Types
TypeCWE IDDescription
CWECWE-79CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Type: CWE
CWE ID: CWE-79
Description: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Metrics
VersionBase scoreBase severityVector
3.18.1HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Version: 3.1
Base score: 8.1
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/discourse/discourse/security/advisories/GHSA-9x4c-29xg-56hw
x_refsource_CONFIRM
Hyperlink: https://github.com/discourse/discourse/security/advisories/GHSA-9x4c-29xg-56hw
Resource:
x_refsource_CONFIRM
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/discourse/discourse/security/advisories/GHSA-9x4c-29xg-56hw
x_refsource_CONFIRM
x_transferred
Hyperlink: https://github.com/discourse/discourse/security/advisories/GHSA-9x4c-29xg-56hw
Resource:
x_refsource_CONFIRM
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:15 Jul, 2021 | 21:15
Updated At:13 Sep, 2021 | 14:44

Discourse is an open-source discussion platform. In Discourse versions 2.7.5 and prior, parsing and rendering of YouTube Oneboxes can be susceptible to XSS attacks. This vulnerability only affects sites which have modified or disabled Discourse's default Content Security Policy. The issue is patched in `stable` version 2.7.6, `beta` version 2.8.0.beta3, and `tests-passed` version 2.8.0.beta3. As a workaround, ensure that the Content Security Policy is enabled, and has not been modified in a way which would make it more vulnerable to XSS attacks.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.15.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Secondary3.18.1HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Primary2.03.5LOW
AV:N/AC:M/Au:S/C:N/I:P/A:N
Type: Primary
Version: 3.1
Base score: 5.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 8.1
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Type: Primary
Version: 2.0
Base score: 3.5
Base severity: LOW
Vector:
AV:N/AC:M/Au:S/C:N/I:P/A:N
CPE Matches
Civilized Discourse Construction Kit, Inc.
discourse
>>discourse>>Versions up to 2.7.5(inclusive)
cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*
Civilized Discourse Construction Kit, Inc.
discourse
>>discourse>>2.8.0
cpe:2.3:a:discourse:discourse:2.8.0:beta1:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-79Primarynvd@nist.gov
CWE-79Secondarysecurity-advisories@github.com
CWE ID: CWE-79
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-79
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/discourse/discourse/security/advisories/GHSA-9x4c-29xg-56hwsecurity-advisories@github.com
Third Party Advisory
Hyperlink: https://github.com/discourse/discourse/security/advisories/GHSA-9x4c-29xg-56hw
Source: security-advisories@github.com
Resource:
Third Party Advisory

Change History

0
Information is not available yet

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