critical
9.8
CWE
74
Advisory Published
CVE Published
Updated

CVE-2023-24540: Improper handling of JavaScript whitespace in html/template

First published: Sun May 07 2023(Updated: )

Go is vulnerable to HTML injection. A remote attacker could inject malicious HTML code into a template containing whitespace characters outside of the character set "\t\n\f\r\u0020\u2028\u2029", which when viewed, would execute in the victim's Web browser within the security context of the hosting site.

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

Affected SoftwareAffected VersionHow to fix
Golang Go<1.19.9
Golang Go>=1.20.0<1.20.4
redhat/golang<1.19.9
1.19.9
redhat/golang<1.20.4
1.20.4
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/491616

Remedy

https://go.dev/issue/59721

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-24540?

    CVE-2023-24540 is a vulnerability that affects JavaScript contexts with actions that may not properly sanitize templates containing whitespace characters outside of the character set \t\n\f\r\u0020\u2028\u2029 in the Go programming language.

  • How severe is CVE-2023-24540?

    CVE-2023-24540 has a severity rating of 9.8 (critical).

  • Which software packages are affected by CVE-2023-24540?

    The affected software packages are golang versions up to and excluding 1.19.9 and golang versions within the range 1.20.0 to 1.20.4.

  • How can I fix CVE-2023-24540?

    To fix CVE-2023-24540, update to golang version 1.19.9 or install a version within the range 1.20.0 to 1.20.4.

  • Where can I find more information about CVE-2023-24540?

    You can find more information about CVE-2023-24540 in the following references: 1. [Bugzilla - CVE-2023-24540](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2196629) 2. [Bugzilla - CVE-2023-24540](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2196630) 3. [Golang Announce - CVE-2023-24540](https://groups.google.com/g/golang-announce/c/MEb0UyuSMsU)

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