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.
EPSS: 0.049 (90.9th percentile) — read the EPSS interpretation.
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.
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
- support@hackerone.com (x_refsource_FEDORA, vendor-advisory, Third Party Advisory)
- support@hackerone.com (x_refsource_FEDORA, vendor-advisory, Third Party Advisory)
- support@hackerone.com (Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (Exploit, Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- support@hackerone.com (Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (Third Party Advisory, x_refsource_MISC)
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.