Apache Flex BlazeDS unsafe deserialization
Previous versions of Apache Flex BlazeDS (4.7.2 and earlier) did not restrict which types were allowed for AMF(X) object deserialization by default. During the deserialization process code is executed that for several known types has undesired side-effects. Other, unknown types may also exhibit such behaviors. One vector in the Java standard library exists that allows an attacker to trigger possibly further exploitable Java deserialization of untrusted data. Other known vectors in third party libraries can be used to trigger remote code execution.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.apache.flex.blazeds:flex-messaging-core | < 4.7.3 | 4.7.3 |
| Java / Kotlin (Maven) | org.apache.flex.blazeds:flex-messaging-remoting | < 4.7.3 | 4.7.3 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2017-5641
- https://github.com/apache/flex-blazeds/commit/11b0aa132d9a43bf81fa12654ff227ff247b4627
- https://github.com/apache/flex-blazeds/commit/f861f0993c35e664906609cad275e45a71e2aaf1
- https://github.com/apache/flex-blazeds
- https://issues.apache.org/jira/browse/FLEX-35290
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03823en_us
- https://web.archive.org/web/20170920093830/http://www.securitytracker.com/id/1038273
- https://web.archive.org/web/20210124021605/http://www.securityfocus.com/bid/97383
- https://www.kb.cert.org/vuls/id/307983
- https://www.zerodayinitiative.com/advisories/ZDI-22-506
- https://www.zerodayinitiative.com/advisories/ZDI-22-507
- http://mail-archives.apache.org/mod_mbox/flex-dev/201703.mbox/%3C6B86C8D0-6E36-48F5-AC81-4AB3978F6746@c-ware.de%3E
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-502- Platform
- Java / Kotlin (Maven)
- Package
org.apache.flex.blazeds:flex-messaging-core, org.apache.flex.blazeds:flex-messaging-remoting- Disclosed
- 13.05.2022
- Updated
- 11.10.2026 11:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-w8v7-prhw-xjpw - CC BY 4.0
Vulnerability history: org.apache.flex.blazeds:flex-messaging-core
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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