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MitreCVE-2021-27671

HistoryFeb 25, 2021 - 1:15 a.m.

CVE-2021-27671

2021-02-2501:15:13

CWE-79

mitre

web.nvd.nist.gov

cve-2021-27671

issue

comrak crate

rust

xss

case-sensitive

protection mechanism

data

javascript

uris

attack

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.001

Percentile

33.8%

JSON

An issue was discovered in the comrak crate before 0.9.1 for Rust. XSS can occur because the protection mechanism for data: and javascript: URIs is case-sensitive, allowing (for example) Data: to be used in an attack.

Affected configurations

Nvd

Node

comrak_projectcomrakRange<0.9.1rust

VendorProductVersionCPE
comrak_projectcomrak*cpe:2.3:a:comrak_project:comrak:*:*:*:*:*:rust:*:*

Vendor	Product	Version	CPE
comrak_project	comrak	*	cpe:2.3:a:comrak_project:comrak::::::rust::*

References

rustsec.org/advisories/RUSTSEC-2021-0026.html

Social References

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.001

Percentile

33.8%

JSON

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