PT-2019-12564 · Facebook · Hhvm

Published 2019-10-02 · Updated 2019-10-10 · CVE-2019-11929

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions HHVM versions prior to 3.30.10 HHVM versions 4.0.0 through 4.8.5 HHVM versions 4.9.0 through 4.18.2 HHVM versions 4.19.0 through 4.19.1 HHVM versions 4.20.0 through 4.20.2 HHVM version 4.21.0 HHVM version 4.22.0 HHVM version 4.23.0

Description The issue is caused by insufficient boundary checks when formatting numbers in the number format function, allowing read/write access to out-of-bounds memory. This could potentially lead to remote code execution.

Recommendations For HHVM versions prior to 3.30.10, update to version 3.30.10 or later. For HHVM versions 4.0.0 through 4.8.5, update to a version outside of this range. For HHVM versions 4.9.0 through 4.18.2, update to a version outside of this range. For HHVM versions 4.19.0 through 4.19.1, update to version 4.19.2 or later. For HHVM versions 4.20.0 through 4.20.2, update to version 4.20.3 or later. For HHVM version 4.21.0, update to version 4.21.1 or later. For HHVM version 4.22.0, update to version 4.22.1 or later. For HHVM version 4.23.0, update to version 4.23.1 or later.

Fix

RCE

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2019-11929

Affected Products

Hhvm

References · 8

• https://github.com/facebook/hhvm/commit/dbeb9a56a638e3fdcef8b691c2a2967132dae692 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-11929 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-11929 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-11929 · Security Note
• https://osv.dev/vulnerability/CVE-2019-11929 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-11929 · Security Note
• https://hhvm.com/blog/2019/09/25/security-update.html · Vendor Advisory
• https://facebook.com/security/advisories/cve-2019-11929 · Note