CVE-2018-15503

Description

The unpack implementation in Swoole version 4.0.4 lacks correct size checks in the deserialization process. An attacker can craft a serialized object to exploit this vulnerability and cause a SEGV.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.09% Top 20%
Vendor Advisory github.com Vendor Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/swoole/swoole-src/issues/1882 vendor advisory issue tracking
https://github.com/swoole/swoole-src/commit/4cdbce5d9bf2fe596bb6acd7d6611f9e8c253a76 patch vendor advisory
https://x-c3ll.github.io/posts/swoole-deserialization-cve-2018-15503/ third party advisory technical description

Frequently Asked Questions

What is the severity of CVE-2018-15503?
CVE-2018-15503 has been scored as a high severity vulnerability.
How to fix CVE-2018-15503?
To fix CVE-2018-15503, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-15503 being actively exploited in the wild?
It is possible that CVE-2018-15503 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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