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VULNERABILITIES

CVE-2018-6345 Details

Description

The function number_format is vulnerable to a heap overflow issue when its second argument ($dec_points) is excessively large. The internal implementation of the function will cause a string to be created with an invalid length, which can then interact poorly with other functions. This affects all supported versions of HHVM (3.30.1 and 3.27.5 and below).

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/facebook/hhvm/commit/190ffdf6c8b1ec443be202c7d69e63a7e3da25e3 CVEPatchThird Party Advisory
https://hhvm.com/blog/2019/01/14/hhvm-3.30.2.html CVERelease NotesVendor Advisory
https://github.com/facebook/hhvm/commit/190ffdf6c8b1ec443be202c7d69e63a7e3da25e3 [email protected]PatchThird Party Advisory
https://hhvm.com/blog/2019/01/14/hhvm-3.30.2.html [email protected]Release NotesVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-787Out-of-bounds Write[email protected]
CWE-122Heap-based Buffer Overflow[email protected]

Affected Products

ProductVersions
facebook hhvm
<= 3.27.5
>= 3.28.0, <= 3.30.1

CPE

  • cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2018-6345
NVD Published Date:
Jan 15, 2019
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2018-6345 Details - Not Deferred