National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-3570 Detail

Current Description

Call to the scrypt_enc() function in HHVM can lead to heap corruption by using specifically crafted parameters (N, r and p). This happens if the parameters are configurable by an attacker for instance by providing the output of scrypt_enc() in a context where Hack/PHP code would attempt to verify it by re-running scrypt_enc() with the same parameters. This could result in information disclosure, memory being overwriten or crashes of the HHVM process. This issue affects versions 4.3.0, 4.4.0, 4.5.0, 4.6.0, 4.7.0, 4.8.0, versions 3.30.5 and below, and all versions in the 4.0, 4.1, and 4.2 series.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 9.8 CRITICAL
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (V3.0 legend)
Impact Score: 5.9
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/facebook/hhvm/commit/cc331e4349e91706a673e2a09f1f2ea5bbb33815 Patch Third Party Advisory
https://hhvm.com/blog/2019/06/10/hhvm-4.9.0.html Release Notes Vendor Advisory

Technical Details

Vulnerability Type (View All)

  • Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:facebook:hiphop_virtual_machine:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
3.30.5
 cpe:2.3:a:facebook:hiphop_virtual_machine:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
4.0.0
Up to (including)
4.0.4
 cpe:2.3:a:facebook:hiphop_virtual_machine:4.1.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:facebook:hiphop_virtual_machine:4.2.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:facebook:hiphop_virtual_machine:4.3.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:facebook:hiphop_virtual_machine:4.4.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:facebook:hiphop_virtual_machine:4.5.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:facebook:hiphop_virtual_machine:4.6.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:facebook:hiphop_virtual_machine:4.7.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:facebook:hiphop_virtual_machine:4.8.0:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-3570
NVD Published Date:
07/18/2019
NVD Last Modified:
08/05/2019