Home/CVE/Various APC functions accept keys containing null bytes as input, leading to premature truncation of input. This issue a
CVE

CVE-2019-11936

Various APC functions accept keys containing null bytes as input, leading to premature truncation of input. This issue a

Various APC functions accept keys containing null bytes as input, leading to premature truncation of input. This issue affects HHVM versions prior to 3.30.12, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.23.1, as well as 4.24.0, 4.25.0, 4.26.0, 4.27.0, 4.28.0, and 4.28.1.

CRITICAL · CVSS 9.8 EPSS 0.00644
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-626Null Byte Interaction Error (Poison Null Byte)
▤

Affected Products & Versions

4
facebook hhvm< 3.30.12
facebook hhvm>= 4.0.0 and <= 4.8.5
facebook hhvm>= 4.9.0 and <= 4.23.1
facebook hhvmall versions
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve-assign@fb.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Dec 2019 · 05:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/facebook/hhvm/commit/f57df6d8cf33cb14c40f52287da29360e7003373PatchThird Party Advisory
https://hhvm.com/blog/2019/10/28/security-update.htmlVendor Advisory
https://www.facebook.com/security/advisories/cve-2019-11936Vendor Advisory
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