XXE in Apache Cxf
CVE-2016-8739
The JAX-RS module in Apache CXF prior to 3.0.12 and 3.1.x prior to 3.1.9 provides a number of Atom JAX-RS MessageBodyReaders. These readers use Apache Abdera Parser which expands XML entities by default which represents a major XXE risk.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
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:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.073 (94.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.073 · newest: 0.073 · change: 0.000
Affected products
- Apache Cxf — versions 3.1.0, 3.1.1, 3.1.2
- Apache Software Foundation Cxf — versions 3.1.x prior to 3.1.9, prior to 3.0.12
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/97579 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2017:0868 (vendor-advisory)
- www.securitytracker.com/id/1037544 (VDB Entry, Third Party Advisory, vdb-entry)
- cxf.apache.org/security-advisories.data/CVE-2016-8739.txt.asc (Patch, Vendor Advisory)
- lists.apache.org/thread.html/rc774278135816e7afc943dc9fc78eb0764f2c84a2b96470a0… (mailing-list)
- lists.apache.org/thread.html/r36e44ffc1a9b365327df62cdfaabe85b9a5637de102cea07d… (mailing-list)
- lists.apache.org/thread.html/rff42cfa5e7d75b7c1af0e37589140a8f1999e578a75738740… (mailing-list)
- lists.apache.org/thread.html/rd49aabd984ed540c8ff7916d4d79405f3fa311d2fdbcf9ed3… (mailing-list)
- lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d… (mailing-list)
- lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da36512… (mailing-list)
Frequently asked questions
- What is CVE-2016-8739?
- CVE-2016-8739 is a high-severity vulnerability in Apache Cxf, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2017-08-10.
- How severe is CVE-2016-8739?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-8739 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.