CVE-2016-6793

Severity: critical (CVSS 9.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-07-17 · updated 2026-06-17
Weakness: CWE-502

Description

The DiskFileItem class in Apache Wicket 6.x before 6.25.0 and 1.5.x before 1.5.17 allows remote attackers to cause a denial of service (infinite loop) and write to, move, and delete files with the permissions of DiskFileItem, and if running on a Java VM before 1.3.1, execute arbitrary code via a crafted serialized Java object.

Affected products

Apache Software Foundation Apache Wicket: from 1.5.0 before 1.5.17; from 6.0.0 before 6.25.0 — fixed in 1.5.17, 6.25.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Wicket 1.5.17, 6.25.0. Check the vendor advisory for mitigations.

References

http://www.openwall.com/lists/oss-security/2016/12/31/1
http://www.securityfocus.com/archive/1/539975/100/0/threaded
http://www.securityfocus.com/bid/95168
http://www.securitytracker.com/id/1037541
https://wicket.apache.org/news/2016/12/31/cve-2016-6793.html
https://www.tenable.com/security/research/tra-2016-23
http://www.openwall.com/lists/oss-security/2016/12/31/1
http://www.securityfocus.com/archive/1/539975/100/0/threaded
http://www.securityfocus.com/bid/95168
http://www.securitytracker.com/id/1037541
https://wicket.apache.org/news/2016/12/31/cve-2016-6793.html
https://www.tenable.com/security/research/tra-2016-23

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