CVE-2023-39318

Improper handling of HTML-like comments in 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 properly handle HTML-like "" comment tokens, nor hashbang "#!" comment tokens, in <script> contexts. This may cause the template parser to improperly interpret the contents of <script> contexts, causing actions to be improperly escaped. This may be leveraged to perform an XSS attack.

El paquete html/template no maneja correctamente los tokens de comentario "" similares a HTML, ni los tokens de comentario hashbang "#!", en el contexto

A flaw was found in Golang. The html/template package did not properly handle HMTL-like "" comment tokens, nor hashbang "#!" comment tokens, in <script> contexts. This issue may cause the template parser to improperly interpret the contents of <script> contexts, 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/62196	Issue Tracking
https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ	Mailing List
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/526156	2023-11-25

URL	Date	SRC
https://pkg.go.dev/vuln/GO-2023-2041	2023-11-25
https://access.redhat.com/security/cve/CVE-2023-39318	2024-05-29
https://bugzilla.redhat.com/show_bug.cgi?id=2237776	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