Security readout for executives and security teams
Plain-English summary
Apache Tika before 1.18 can get stuck in an infinite loop while parsing a specially crafted or fuzzed CHM file. In business terms, systems that accept untrusted documents for Tika processing could lose parser capacity or service availability until the process is stopped or isolated.
Executive priority
Prioritize remediation for internet-facing or high-volume document ingestion systems. This is not shown as actively exploited in the supplied evidence, but denial-of-service impact can be operationally meaningful where Tika parsing is on a critical workflow path.
Technical view
CVE-2018-1339 is a denial-of-service issue in Apache Tika's ChmParser affecting versions before 1.18. The source bundle describes a crafted or fuzzed file triggering an infinite loop. No CVSS vector, CWE, or detailed root cause is provided in the supplied sources.
Likely exposure
Exposure is most likely in applications, content pipelines, search indexing systems, email gateways, or security tools that embed Apache Tika before 1.18 and parse CHM files from untrusted users or external sources.
Exploitation context
The provided bundle does not show CISA KEV listing or active exploitation evidence. Exploitation should be treated as plausible for denial of service because the trigger is a crafted file, but the sources do not establish public weaponization or real-world attacks.
Researcher notes
The supplied record is sparse: no CVSS, CWE, affected CPEs, or patch diff details are included. Treat version boundary before 1.18 as the strongest remediation signal. Avoid asserting impact beyond denial of service from an infinite loop in ChmParser.
Mitigation direction
- Upgrade Apache Tika to 1.18 or later where directly embedded.
- Apply vendor backports or Red Hat advisory packages for distribution-managed deployments.
- Restrict CHM parsing if untrusted CHM files are not business-required.
- Run document parsing in isolated workers with timeouts and resource limits.
- Check current Apache and OS vendor guidance before deployment changes.
Validation and detection
- Inventory applications and services that include Apache Tika.
- Confirm deployed Tika versions are 1.18 or later, or vendor-patched.
- Identify document ingestion paths that accept CHM files from external sources.
- Review parser worker timeout, restart, and resource isolation controls.
- Check logs for repeated parser hangs or worker exhaustion around CHM inputs.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2018-1339 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- RHSA-2018:2669CVE reference · vendor-advisory, x_refsource_REDHAT
- [dev] 20180425 [CVE-2018-1339] DoS (Infinite Loop) Vulnerability in Apache Tika's ChmParserCVE reference · mailing-list, x_refsource_MLIST
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.