high
7.3
CWE
74
Advisory Published
CVE Published
Updated

CVE-2023-24539: Improper sanitization of CSS values in html/template

First published: Sun May 07 2023(Updated: )

Angle brackets (<>) were not considered dangerous characters when inserted into CSS contexts. Templates containing multiple actions separated by a '/' character could result in unexpectedly closing the CSS context and allowing for injection of unexpected HMTL, if executed with untrusted input.

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/491615

Remedy

https://go.dev/issue/59720

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2023-24539.

  • What is the severity of CVE-2023-24539?

    The severity of CVE-2023-24539 is high.

  • Which software versions are affected by CVE-2023-24539?

    Versions up to and excluding 1.19.9 of the golang package from Red Hat, as well as versions between 1.20.0 and 1.20.4, are affected by CVE-2023-24539.

  • What is the description of CVE-2023-24539?

    CVE-2023-24539 allows for injection of unexpected HTML if executed with untrusted input due to angle brackets (<>) not being considered as dangerous characters when inserted into CSS contexts and templates with multiple actions separated by a '/' character.

  • How can I mitigate the vulnerability CVE-2023-24539?

    To mitigate CVE-2023-24539, update the golang package to versions 1.19.9 or 1.20.4, as provided by Red Hat.

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