medium
6.1
CWE
79
Advisory Published
CVE Published
Updated

CVE-2023-39318: Improper handling of HTML-like comments in script contexts in html/template

First published: Wed Sep 06 2023(Updated: )

Golang Go is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the html/template package. A remote attacker could exploit this vulnerability using a specially crafted URL to execute script in a victim's Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.

Credit: security@golang.org security@golang.org security@golang.org

Affected SoftwareAffected VersionHow to fix
Golang Go<1.20.8
Golang Go>=1.21.0<1.21.1
redhat/golang<1.20.8
1.20.8
redhat/golang<1.21.1
1.21.1
debian/golang-1.15<=1.15.15-1~deb11u4
debian/golang-1.19<=1.19.8-2
IBM Concert Software<=1.0.0 - 1.0.1

Remedy

https://go.dev/cl/526156

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2023-39318.

  • What is the severity of CVE-2023-39318?

    The severity of CVE-2023-39318 is medium.

  • What is the affected software for CVE-2023-39318?

    The affected software for CVE-2023-39318 is Golang Go versions between 1.20.8 and 1.21.1.

  • How does CVE-2023-39318 affect the html/template package?

    CVE-2023-39318 affects the html/template package by not properly handling HTML-like comment tokens and hashbang #! comment tokens in <script> contexts, leading to improper interpretation of contents and potential escaping issues.

  • Are there any references related to CVE-2023-39318?

    Yes, here are some references related to CVE-2023-39318: [Link 1](https://go.dev/cl/526156), [Link 2](https://go.dev/issue/62196), [Link 3](https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ).

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