cve/2019/CVE-2019-5427.md

CVE-2019-5427

Description

c3p0 version < 0.9.5.4 may be exploited by a billion laughs attack when loading XML configuration due to missing protections against recursive entity expansion when loading configuration.

POC

Reference

• https://hackerone.com/reports/509315
• https://www.oracle.com/security-alerts/cpuapr2020.html
• https://www.oracle.com/security-alerts/cpujan2021.html
• https://www.oracle.com/security-alerts/cpujul2020.html
• https://www.oracle.com/security-alerts/cpuoct2020.html
• https://www.oracle.com/security-alerts/cpuoct2021.html

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/developer3000S/PoC-in-GitHub
• https://github.com/hectorgie/PoC-in-GitHub
• https://github.com/nomi-sec/PoC-in-GitHub
• https://github.com/shanika04/cp30_XXE_partial_fix