CVE-2019-11935

CRITICALCVSS 9.8/10EPSS 1.48%

Last modified

CVE-2019-11935 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Insufficient boundary checks when processing a string in mb_ereg_replace allows access to out-of-bounds memory. 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.. EPSS estimates a 1.48% chance of exploitation in the next 30 days.

Description

Insufficient boundary checks when processing a string in mb_ereg_replace allows access to out-of-bounds memory. 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.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
1.48%

70.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FacebookHhvm< 3.30.12
FacebookHhvm>= 4.0.0, <= 4.8.5
FacebookHhvm>= 4.9.0, <= 4.23.1
FacebookHhvm4.24.0
FacebookHhvm4.25.0
FacebookHhvm4.26.0
FacebookHhvm4.27.0
FacebookHhvm4.28.0
FacebookHhvm4.28.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-11935?
Insufficient boundary checks when processing a string in mb_ereg_replace allows access to out-of-bounds memory. 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.
How severe is CVE-2019-11935?
CVE-2019-11935 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.48% probability of exploitation in the next 30 days.
How do I fix CVE-2019-11935?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-11935?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST