Critical severity · published Apr 29, 2019
CVE-2019-3561
Insufficient boundary checks for the strrpos and strripos functions allow access to out-of-bounds memory
9.8
CVSS
1.7%
EPSS
No
On KEV
Description
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).
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HH
Hhvm · Facebook
through 3.27.7; 3.28.0 through 3.30.4; 4.0.0 through 4.0.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-3561
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-3561
Third Party Advisory
https://github.com/facebook/hhvm/commit/46003b4ab564b2abcd8470035fc324fe36aa8c75
Vendor Advisory
https://hhvm.com/blog/2019/04/03/hhvm-4.0.4.html
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