CVE-2019-3561

moderate-risk

Published 2019-04-29

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).

Do I need to act?

0.75% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (1)

Hhvm

Affected Vendors

Facebook

References (4)

Third Party Advisory https://github.com/facebook/hhvm/commit/46003b4ab564b2abcd8470035fc324fe36aa8c75

Vendor Advisory https://hhvm.com/blog/2019/04/03/hhvm-4.0.4.html

Third Party Advisory https://github.com/facebook/hhvm/commit/46003b4ab564b2abcd8470035fc324fe36aa8c75

Vendor Advisory https://hhvm.com/blog/2019/04/03/hhvm-4.0.4.html

/ 100

moderate-risk

Severity 32/34 · Critical

Exploitability 3/34 · Minimal

Exposure 5/34 · Minimal