HHVM supports the use of an "admin" server which accepts administrative requests over HTTP. One of those request handlers, dump-pcre-cache, can be used to output cached regular expressions from the current execution context into a file. The handler takes a parameter which specifies where on the filesystem to write this data. The parameter is not validated, allowing a malicious user to overwrite arbitrary files where the user running HHVM has write access. This issue affects HHVM versions prior to 4.56.2, all versions between 4.57.0 and 4.78.0, as well as 4.79.0, 4.80.0, 4.81.0, 4.82.0, and 4.83.0.
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Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: facebook
Published: 2021-10-26T20:05:10
Updated: 2024-08-04T19:12:09.554Z
Reserved: 2019-01-02T00:00:00
Link: CVE-2019-3556
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-10-26T20:15:07.603
Modified: 2024-11-21T04:42:09.547
Link: CVE-2019-3556
Redhat
No data.