CVE-2021-28834

Kramdown before 2.3.1 does not restrict Rouge formatters to the Rouge::Formatters namespace, and thus arbitrary classes can be instantiated.

CVSS v3 9.8 CRITICAL
CVSS v2.0 6.8 MEDIUM

9.8^/10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/gettalong/kramdown/compare/REL_2_3_0...REL_2_3_1	Patch Third Party Advisory
https://github.com/gettalong/kramdown/pull/708	Exploit Third Party Advisory
https://gitlab.com/gitlab-org/gitlab/-/commit/179329b5c3c118924fb242dc449d06b4ed6ccb66	Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJCJVYHPY6LNUFM6LYZIAUIYOMVT5QGV/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S3BBLUIDCUUR3NEE4NJLOCCAV3ALQ3O6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYOLQKFL6IJCQLBXV34Z4TI4O54GESPR/
https://www.debian.org/security/2021/dsa-4890	Third Party Advisory
https://github.com/gettalong/kramdown/compare/REL_2_3_0...REL_2_3_1	Patch Third Party Advisory
https://github.com/gettalong/kramdown/pull/708	Exploit Third Party Advisory
https://gitlab.com/gitlab-org/gitlab/-/commit/179329b5c3c118924fb242dc449d06b4ed6ccb66	Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJCJVYHPY6LNUFM6LYZIAUIYOMVT5QGV/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S3BBLUIDCUUR3NEE4NJLOCCAV3ALQ3O6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYOLQKFL6IJCQLBXV34Z4TI4O54GESPR/
https://www.debian.org/security/2021/dsa-4890	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:kramdown_project:kramdown:*:*:*:*:*:ruby:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:32:::::::*
	cpe:2.3:o:fedoraproject:fedora:33:::::::*
	cpe:2.3:o:fedoraproject:fedora:34:::::::*

Configuration 3 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

History

21 Nov 2024, 06:00

Type	Values Removed	Values Added
References	~~() https://github.com/gettalong/kramdown/compare/REL_2_3_0...REL_2_3_1 - Patch, Third Party Advisory~~	() https://github.com/gettalong/kramdown/compare/REL_2_3_0...REL_2_3_1 - Patch, Third Party Advisory
References	~~() https://github.com/gettalong/kramdown/pull/708 - Exploit, Third Party Advisory~~	() https://github.com/gettalong/kramdown/pull/708 - Exploit, Third Party Advisory
References	~~() https://gitlab.com/gitlab-org/gitlab/-/commit/179329b5c3c118924fb242dc449d06b4ed6ccb66 - Patch, Third Party Advisory~~	() https://gitlab.com/gitlab-org/gitlab/-/commit/179329b5c3c118924fb242dc449d06b4ed6ccb66 - Patch, Third Party Advisory
References	~~() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJCJVYHPY6LNUFM6LYZIAUIYOMVT5QGV/ -~~	() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJCJVYHPY6LNUFM6LYZIAUIYOMVT5QGV/ -
References	~~() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S3BBLUIDCUUR3NEE4NJLOCCAV3ALQ3O6/ -~~	() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S3BBLUIDCUUR3NEE4NJLOCCAV3ALQ3O6/ -
References	~~() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYOLQKFL6IJCQLBXV34Z4TI4O54GESPR/ -~~	() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYOLQKFL6IJCQLBXV34Z4TI4O54GESPR/ -
References	~~() https://www.debian.org/security/2021/dsa-4890 - Third Party Advisory~~	() https://www.debian.org/security/2021/dsa-4890 - Third Party Advisory

07 Nov 2023, 03:32

Type	Values Removed	Values Added
References	{'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SYOLQKFL6IJCQLBXV34Z4TI4O54GESPR/', 'name': 'FEDORA-2021-4c57a892d1', 'tags': ['Third Party Advisory'], 'refsource': 'FEDORA'} {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S3BBLUIDCUUR3NEE4NJLOCCAV3ALQ3O6/', 'name': 'FEDORA-2021-139a6a2f9d', 'tags': ['Third Party Advisory'], 'refsource': 'FEDORA'} {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NJCJVYHPY6LNUFM6LYZIAUIYOMVT5QGV/', 'name': 'FEDORA-2021-edc673e864', 'tags': ['Third Party Advisory'], 'refsource': 'FEDORA'}	() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJCJVYHPY6LNUFM6LYZIAUIYOMVT5QGV/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S3BBLUIDCUUR3NEE4NJLOCCAV3ALQ3O6/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYOLQKFL6IJCQLBXV34Z4TI4O54GESPR/ -

Information

Published : 2021-03-19 07:15

Updated : 2024-11-21 06:00

NVD link : CVE-2021-28834

Mitre link : CVE-2021-28834

CVE.ORG link : CVE-2021-28834

JSON object : View

Products Affected

debian

debian_linux

fedoraproject

fedora

kramdown_project

kramdown

CWE

NVD-CWE-noinfo

9.8 /10