Home/CVE/Insufficient boundary checks for the strrpos and strripos functions allow access to out-of-bounds memory. This affects a
CVE

CVE-2019-3561

Insufficient boundary checks for the strrpos and strripos functions allow access to out-of-bounds memory. This affects a

Insufficient boundary checks for the strrpos and strripos functions allow access to out-of-bounds memory. This affects all supported versions of HHVM (4.0.3, 3.30.4, and 3.27.7 and below).

CRITICAL · CVSS 9.8 EPSS 0.00746
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-125Out-of-bounds Read
▤

Affected Products & Versions

3
facebook hhvm<= 3.27.7
facebook hhvm>= 3.28.0 and <= 3.30.4
facebook hhvm>= 4.0.0 and <= 4.0.3
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.0 · 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 NVD29 Apr 2019 · 04:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

2
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/46003b4ab564b2abcd8470035fc324fe36aa8c75Third Party Advisory
https://hhvm.com/blog/2019/04/03/hhvm-4.0.4.htmlVendor Advisory
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