XXE in Mchange C3p0
CVE-2019-5427
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.049 (92.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.049 · newest: 0.049 · change: 0.000
Affected products
- Mchange C3p0
- Oracle Communications Ip Service Activator — versions 7.3.0, 7.4.0
- Oracle Communications Session Route Manager
- Oracle Documaker
- Oracle Enterprise Manager Base Platform — versions 13.2.1.0
- Oracle Enterprise Manager Ops Center — versions 12.4.0.0
- Oracle Flexcube Private Banking — versions 12.0.0, 12.1.0
- Oracle Hyperion Infrastructure Technology — versions 11.1.2.4
- Oracle Retail Xstore Point Of Service — versions 15.0, 16.0, 17.0
- Oracle Webcenter Sites — versions 12.2.1.3.0, 12.2.1.4.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Third Party Advisory)
- www.oracle.com/security-alerts/cpuapr2020.html (Third Party Advisory)
- www.oracle.com/security-alerts/cpujul2020.html (Third Party Advisory)
- hackerone.com/reports/509315 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- www.oracle.com/security-alerts/cpuoct2020.html (Third Party Advisory)
- www.oracle.com/security-alerts/cpujan2021.html (Third Party Advisory)
- www.oracle.com/security-alerts/cpuoct2021.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-5427?
- CVE-2019-5427 is a high-severity vulnerability in Mchange C3p0, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 7.5/10. Published 2019-04-22.
- How severe is CVE-2019-5427?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-5427 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.