CVE-2023-24539

Description

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

CVSS Metrics

• v3.1•HIGH•Score: 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS Trends

Current EPSS score: 0.08%• Percentile: 23%

Techniques & Countermeasures

• CWE-74•Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

  The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

• CWE-94•Improper Control of Generation of Code ('Code Injection')

  The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Affected Systems

• go standard library•html/template

  < 1.19.9 | ≥ 1.20.0-0, < 1.20.4

• golang•go

  < 1.19.9 | ≥ 1.20.0, < 1.20.4

• Go•stdlib

  ≥ 1.20.0-0, < 1.20.4

References (5)

• https://go.dev/issue/59720
• https://go.dev/cl/491615
• https://groups.google.com/g/golang-announce/c/MEb0UyuSMsU
• https://pkg.go.dev/vuln/GO-2023-1751
• https://security.netapp.com/advisory/ntap-20241129-0005/