9.8
CRITICAL
CVE-2019-11929
"HackHHVM Double-Free Remote Code Execution"
Description

Insufficient boundary checks when formatting numbers in number_format allows read/write access to out-of-bounds memory, potentially leading to remote code execution. This issue affects HHVM versions prior to 3.30.10, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.18.2, and versions 4.19.0, 4.19.1, 4.20.0, 4.20.1, 4.20.2, 4.21.0, 4.22.0, 4.23.0.

INFO

Published Date :

Oct. 2, 2019, 7:15 p.m.

Last Modified :

Oct. 10, 2019, 5:14 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2019-11929 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Facebook hhvm
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-11929.

URL Resource
https://github.com/facebook/hhvm/commit/dbeb9a56a638e3fdcef8b691c2a2967132dae692 Patch Third Party Advisory
https://hhvm.com/blog/2019/09/25/security-update.html Vendor Advisory
https://www.facebook.com/security/advisories/cve-2019-11929 Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-11929 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-11929 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Oct. 10, 2019

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://github.com/facebook/hhvm/commit/dbeb9a56a638e3fdcef8b691c2a2967132dae692 No Types Assigned https://github.com/facebook/hhvm/commit/dbeb9a56a638e3fdcef8b691c2a2967132dae692 Patch, Third Party Advisory
    Changed Reference Type https://hhvm.com/blog/2019/09/25/security-update.html No Types Assigned https://hhvm.com/blog/2019/09/25/security-update.html Vendor Advisory
    Changed Reference Type https://www.facebook.com/security/advisories/cve-2019-11929 No Types Assigned https://www.facebook.com/security/advisories/cve-2019-11929 Third Party Advisory
    Added CWE NIST CWE-119
    Added CPE Configuration OR *cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* versions up to (excluding) 3.30.10 *cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (including) 4.8.5 *cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* versions from (including) 4.9.0 up to (including) 4.18.2 *cpe:2.3:a:facebook:hhvm:4.19.0:*:*:*:*:*:*:* *cpe:2.3:a:facebook:hhvm:4.19.1:*:*:*:*:*:*:* *cpe:2.3:a:facebook:hhvm:4.20.0:*:*:*:*:*:*:* *cpe:2.3:a:facebook:hhvm:4.20.1:*:*:*:*:*:*:* *cpe:2.3:a:facebook:hhvm:4.20.2:*:*:*:*:*:*:* *cpe:2.3:a:facebook:hhvm:4.21.0:*:*:*:*:*:*:* *cpe:2.3:a:facebook:hhvm:4.22.0:*:*:*:*:*:*:* *cpe:2.3:a:facebook:hhvm:4.23.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CWE Facebook, Inc. CWE-119
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

6.00 }} 1.11%

score

0.92484

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability