Tika
CVE-2018-11761
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
1DescriptionNVD
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.
AnalysisAI
In Apache Tika 0.1 to 1.18, the XML parsers were not configured to limit entity expansion. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This XML External Entity (XXE) vulnerability could allow attackers to read arbitrary files or perform SSRF through XML processing.
Technical ContextAI
This vulnerability is classified as XML External Entity (XXE) (CWE-611), which allows attackers to read arbitrary files or perform SSRF through XML processing. 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. Affected products include: Apache Tika, Oracle Business Process Management Suite.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Disable external entity processing in XML parsers, use JSON instead of XML where possible.
From Apache Tika versions 1.7 to 1.17, clients could send carefully crafted headers to tika-server that could be used to
Critical XXE in Apache Tika tika-core (1.13-3.2.1), tika-pdf-module (2.0.0-3.2.1) and tika-parsers (1.13-1.28.5) modules
An XXE issue in SAXBuilder in JDOM through 2.0.6 allows attackers to cause a denial of service via a crafted HTTP reques
Apache Tika before 1.14 allows Java code execution for serialized objects embedded in MATLAB files. Rated critical sever
A carefully crafted or corrupt zip file can cause an OOM in Apache Tika's RecursiveParserWrapper in versions 1.7-1.21. R
Apache Tika before 1.13 does not properly initialize the XML parser or choose handlers, which might allow remote attacke
A carefully crafted package/compressed file that, when unzipped/uncompressed yields the same file (a quine), causes a St
In Apache Tika 1.19 (CVE-2018-11761), we added an entity expansion limit for XML parsing. Rated high severity (CVSS 7.5)
In Apache Tika 1.19 to 1.21, a carefully crafted 2003ml or 2006ml file could consume all available SAXParsers in the poo
A carefully crafted or corrupt sqlite file can cause an infinite loop in Apache Tika's SQLite3Parser in versions 1.8-1.1
In Apache Tika 0.9 to 1.18, in a rare edge case where a user does not specify an extract directory on the commandline (-
Apache Tika server (aka tika-server) in Apache Tika 1.9 might allow remote attackers to read arbitrary files via the HTT
Same technique Denial Of Service
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External POC / Exploit Code
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