CVE-2019-3556

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.

CVSS v3.0 8.1 HIGH
CVSS v2.0 5.5 MEDIUM

8.1^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

5.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:P/A:P

Exploitability : 8.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.facebook.com/security/advisories/cve-2019-3556	Broken Link
https://github.com/facebook/hhvm/commit/abe0b29e4d3a610f9bc920b8be4ad8403364c2d4	Patch Third Party Advisory
https://hhvm.com/blog/2020/11/12/security-update.html	Vendor Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:facebook:hhvm::::::::
	cpe:2.3:a:facebook:hhvm::::::::
	cpe:2.3:a:facebook:hhvm:4.79.0:::::::*
	cpe:2.3:a:facebook:hhvm:4.80.0:::::::*
	cpe:2.3:a:facebook:hhvm:4.81.0:::::::*
	cpe:2.3:a:facebook:hhvm:4.82.0:::::::*
	cpe:2.3:a:facebook:hhvm:4.83.0:::::::*

Information

Published : 2021-10-26 13:15

Updated : 2021-10-29 09:38

NVD link : CVE-2019-3556

Mitre link : CVE-2019-3556

JSON object : View

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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Products Affected

facebook

hhvm

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