CVE Vulnerability

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.

5.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.1 /10

CVSS v3.0 : HIGH

V3 Legend

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

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
Configurations

Configuration 1

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

Published : 2021-10-26 08:15

Updated : 2021-10-29 04:38

NVD link : CVE-2019-3556

Mitre link : CVE-2019-3556

Products Affected
No products.
CWE
CWE-22