CVE-2018-11756

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-07-23 · updated 2026-06-17

Description

In PHP Runtime for Apache OpenWhisk, a Docker action inheriting one of the Docker tags openwhisk/action-php-v7.2:1.0.0 or openwhisk/action-php-v7.1:1.0.1 (or earlier) may allow an attacker to replace the user function inside the container if the user code is vulnerable to code exploitation.

Affected products

Apache Software Foundation Docker Skeleton Runtime for Apache OpenWhisk: before 1.0.1; before 1.0.2 — fixed in 1.0.1, 1.0.2

How to fix

Upgrade to a fixed version: Apache Software Foundation Docker Skeleton Runtime for Apache OpenWhisk 1.0.1, 1.0.2. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/104915
https://github.com/apache/incubator-openwhisk-runtime-php/commit/6caf902f527250ee4b7b695929b628d560e0dad1
https://lists.apache.org/thread.html/439bd5ff5822708c645a0d816ed9914b88c97eda32eae6ea211bc0dc%40%3Cdev.openwhisk.apache.org%3E
https://www.puresec.io/hubfs/Apache%20OpenWhisk%20PureSec%20Security%20Advisory.pdf
http://www.securityfocus.com/bid/104915
https://github.com/apache/incubator-openwhisk-runtime-php/commit/6caf902f527250ee4b7b695929b628d560e0dad1
https://lists.apache.org/thread.html/439bd5ff5822708c645a0d816ed9914b88c97eda32eae6ea211bc0dc%40%3Cdev.openwhisk.apache.org%3E

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