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Fencer Intel
medium 6.1

GHSA-5f5v-5c3v-gw5v json

Silverstripe IE requests not properly behaving with rewritehashlinks

published 2y ago modified last yr.

cvss
6.1
version 3.1, GitHub
cisa kev
Not listed
not in CISA's catalog
epss
—
no score, EPSS covers CVEs only
public exploits
0
none known

Summary

Non IE browsers don’t appear to be affected, but I haven’t tested a wide range of browsers to be sure

Requests that come through from IE do NOT appear to encode all entities in the URL string, meaning they are inserted into output content directly by SSViewer::process() when rewriting hashlinks, as it directly outputs $_SERVER[‘REQUEST_URI’]

**Example IE8 request** 127.0.0.1 - - [18/Jun/2014:14:13:42 +1000] “GET /site/cars/brands/toyota?one=1\”onmouseover=\”alert(‘things’);\” HTTP/1.1” 200

**Example FF request** 127.0.0.1 - - [18/Jun/2014:14:14:22 +1000] “GET /site/cars/brands/toyota?one=1\%22onmouseover=\%22alert(%27things%27);\%22 HTTP/1.1” 200

This causes any hash anchor to have the JS code inserted into the page as-is.

Patch / fix

  • packagist silverstripe/framework 3.0.13, 3.1.12

Is GHSA-5f5v-5c3v-gw5v in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CVSS scores

assigned by version score vector
GitHub 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist silverstripe/framework
<3.0.13
>=3.1.0, <3.1.12
3.0.13
3.1.12

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.