CVE-2023-39319

Improper handling of special tags within script contexts in html/template

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The html/template package does not apply the proper rules for handling occurrences of "<script", "<!--", and "</script" within JS literals in <script> contexts. This may cause the template parser to improperly consider script contexts to be terminated early, causing actions to be improperly escaped. This could be leveraged to perform an XSS attack.

El paquete html/template no aplica las reglas adecuadas para controlar las ocurrencias de ". Esto puede hacer que el analizador de plantillas considere incorrectamente que los contextos de script se terminan antes de tiempo, lo que provoca que las acciones se escapen incorrectamente. Esto podría aprovecharse para realizar un ataque XSS.

A flaw was found in Golang. The html/template package did not apply the proper rules for handling occurrences of "<script", "<!--", and "</script" within JS literals in <script> contexts. This issue may cause the template parser to improperly consider script contexts to be terminated early, causing actions to be improperly escaped.

*Credits: Takeshi Kaneko (GMO Cybersecurity by Ierae, Inc.)

CVSS Scores

NISTv3.1 6.1

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-07-27 CVE Reserved
2023-09-08 CVE Published
2024-08-02 CVE Updated
2024-09-14 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (8)

URL	Tag	Source
https://go.dev/issue/62197	Issue Tracking
https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ	Release Notes
https://security.gentoo.org/glsa/202311-09
https://security.netapp.com/advisory/ntap-20231020-0009	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://go.dev/cl/526157	2023-11-25

URL	Date	SRC
https://pkg.go.dev/vuln/GO-2023-2043	2023-11-25
https://access.redhat.com/security/cve/CVE-2023-39319	2024-05-29
https://bugzilla.redhat.com/show_bug.cgi?id=2237773	2024-05-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Golang Search vendor "Golang"		Go Search vendor "Golang" for product "Go"				< 1.20.8 Search vendor "Golang" for product "Go" and version " < 1.20.8"		-		Affected
Golang Search vendor "Golang"		Go Search vendor "Golang" for product "Go"				>= 1.21.0 < 1.21.1 Search vendor "Golang" for product "Go" and version " >= 1.21.0 < 1.21.1"		-		Affected