CVE-2024-32463 phlex makes Cross-site Scripting (XSS) possible due to improper sanitisation of `href` attributes on `<a>` tags
An XSS vulnerability in the Phlex Ruby framework allows attackers to execute scripts via bypassed href sanitization, requiring an upgrade to patched versions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2024-32463?
CVE-2024-32463 is a high-severity cross-site scripting vulnerability in phlex-ruby phlex, published on 17 Apr 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
phlex is an open source framework for building object-oriented views in Ruby. There is a potential cross-site scripting (XSS) vulnerability that can be exploited via maliciously crafted user data. The filter to detect and prevent the use of the `javascript:` URL scheme in the `href` attribute of an `<a>` tag could be bypassed with tab `\t` or newline `\n` characters between the characters of the protocol, e.g. `java\tscript:`. This vulnerability is fixed in 1.10.1, 1.9.2, 1.8.3, 1.7.2, 1.6.3, 1.5.3, and 1.4.2. Configuring a Content Security Policy that does not allow `unsafe-inline` would effectively prevent this vulnerability from being exploited.
Weakness: CWE-79
Which versions are affected by CVE-2024-32463?
14 open source packages ship an affected version, including phlex.
| Package | Affected | Fixed in |
|---|---|---|
phlex RubyGems | All versions | 1.4.2 |
phlex RubyGems | All versions | 1.4.2 |
phlex RubyGems | From 1.10.0 | 1.10.1 |
phlex RubyGems | From 1.10.0 | 1.10.1 |
phlex RubyGems | From 1.5.0 | 1.5.3 |
phlex RubyGems | From 1.5.0 | 1.5.3 |
8 more packages
phlex RubyGems | From 1.6.0 | 1.6.3 |
phlex RubyGems | From 1.6.0 | 1.6.3 |
phlex RubyGems | From 1.7.0 | 1.7.2 |
phlex RubyGems | From 1.7.0 | 1.7.2 |
phlex RubyGems | From 1.8.0 | 1.8.3 |
phlex RubyGems | From 1.8.0 | 1.8.3 |
phlex RubyGems | From 1.9.0 | 1.9.2 |
phlex RubyGems | From 1.9.0 | 1.9.2 |
How do I fix CVE-2024-32463?
Upgrade phlex to a fixed version for your release line: 1.4.2, 1.10.1, 1.5.3 or 1.6.3.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2024-32463 being exploited?
There is no known exploitation of CVE-2024-32463 in the wild and no public exploit code.
Sources
Also known as GHSA-g7xq-xv8c-h98c.