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CVE-2019-11046

MEDIUMCVSS 5.3/10EPSS 4.08%

Last modified

CVE-2019-11046 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP bcmath extension functions on some systems, including Windows, can be tricked into reading beyond the allocated space by supplying it with string containing characters that are identified as numeric by the OS but aren't ASCII numbers. This can read to disclosure of the content of some memory locations.. EPSS estimates a 4.08% chance of exploitation in the next 30 days.

Description

In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP bcmath extension functions on some systems, including Windows, can be tricked into reading beyond the allocated space by supplying it with string containing characters that are identified as numeric by the OS but aren't ASCII numbers. This can read to disclosure of the content of some memory locations.

Metrics

CVSS 3.1
5.3/10

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

EPSS Probability
4.08%

89.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
PhpPhp>= 7.2.0, <= 7.2.26
PhpPhp>= 7.3.0, <= 7.3.13
PhpPhp7.4.0
DebianDebian Linux8.0
DebianDebian Linux9.0
DebianDebian Linux10.0
FedoraprojectFedora30
FedoraprojectFedora31
OpensuseLeap15.1
CanonicalUbuntu Linux12.04
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux18.04
CanonicalUbuntu Linux19.04
CanonicalUbuntu Linux19.10
TenableSecuritycenter< 5.19.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-11046?
In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP bcmath extension functions on some systems, including Windows, can be tricked into reading beyond the allocated space by supplying it with string containing characters that are identified as numeric by the OS but aren't ASCII numbers. This can read to disclosure of the content of some memory locations.
How severe is CVE-2019-11046?
CVE-2019-11046 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 4.08% probability of exploitation in the next 30 days.
How do I fix CVE-2019-11046?
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-2019-11046?

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

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Source: NVD / NIST