Deserialization in Swoole

CVE-2018-15503

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.

Vulnerability class: Insecure Deserialization

EPSS: 0.023 (81.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

  • Swoole — versions 4.0.4
  • N/a — versions n/a

Weakness classification (CWE)

References

  • cve@mitre.org (x_refsource_MISC, Issue Tracking, Vendor Advisory)
  • cve@mitre.org (Patch, x_refsource_MISC, Vendor Advisory)
  • cve@mitre.org (Technical Description, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-15503?
CVE-2018-15503 is a high-severity vulnerability in Swoole, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2018-08-18.
How severe is CVE-2018-15503?
High severity. CVSS v3 base score is 7.5 out of 10.