XXE in Apache Tika
CVE-2018-11761
In Apache Tika 0.1 to 1.18, the XML parsers were not configured to limit entity expansion. They were therefore vulnerable to an entity expansion vulnerability which can lead to a denial of service attack.
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:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.094 (95.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.086 · newest: 0.094 · change: +0.008
Affected products
- Apache Tika
- Apache Software Foundation Tika — versions 0.1 to 1.18
- Oracle Business Process Management Suite — versions 12.1.3.0.0, 12.2.1.3.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/105514 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.apache.org/thread.html/5553e10bba5604117967466618f219c0cae710075819c70cfb… (mailing-list)
- lists.apache.org/thread.html/708d94141126eac03011144a971a6411fcac16d9c248d1d535… (mailing-list)
- www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-11761?
- CVE-2018-11761 is a high-severity vulnerability in Apache Tika, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2018-09-19.
- How severe is CVE-2018-11761?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-11761 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.