What’s Vulnerable › Vulnerabilities

CVE-2019-18956

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-12-17 · updated 2026-06-17
• Weakness: CWE-502

Description

Divisa Proxia Suite 9 < 9.12.16, 9.11.19, 9.10.26, 9.9.8, 9.8.43 and 9.7.10, 10.0 < 10.0.32, and 10.1 < 10.1.5, SparkSpace 1.0 < 1.0.30, 1.1 < 1.1.2, and 1.2 < 1.2.4, and Proxia PHR 1.0 < 1.0.30 and 1.1 < 1.1.2 allows remote code execution via untrusted Java deserialization. The proxia-error cookie is insecurely deserialized in every request (GET or POST). Thus, an unauthenticated attacker can easily craft a seria1.0lized payload in order to execute arbitrary code via the prepareError function in the com.divisait.dv2ee.controller.MVCControllerServlet class of the dv2eemvc.jar component. allows remote code execution via untrusted Java deserialization. The proxia-error cookie is insecurely deserialized in every request (GET or POST). Thus, an unauthenticated attacker can easily craft a serialized payload in order to execute arbitrary code via the prepareError function in the com.divisait.dv2ee.controller.MVCControllerServlet class of the dv2eemvc.jar component. Affected products include Proxia Premium Edition 2017 and Sparkspace.

Affected products

• Divisait Dv2Eemvc: from 17-62 through 17-147; from 18.6 before 18.6.42; from 19.0 before 19.0.13; from 19.1 before 19.1.19; from 19.2 before 19.2.41; from 19.3 before 19.3.37 — fixed in 18.6.42, 19.0.13, 19.1.19, 19.2.41, 19.3.37, 19.4.13
• Divisait Proxia Phr: from 1.0 before 1.0.30; from 1.1 before 1.1.2 — fixed in 1.0.30, 1.1.2
• Divisait Proxia Suite: from 9.0 before 9.12.16; from 10.0 before 10.0.32; from 10.1 before 10.1.5 — fixed in 10.0.32, 10.1.5, 9.12.16
• Divisait Sparkspace: from 1.0 before 1.0.30; from 1.1 before 1.1.2; from 1.2 before 1.2.4 — fixed in 1.0.30, 1.1.2, 1.2.4

How to fix

Upgrade to a fixed version: Divisait Dv2Eemvc 18.6.42, 19.0.13, 19.1.19, 19.2.41; Divisait Proxia Phr 1.0.30, 1.1.2; Divisait Proxia Suite 10.0.32, 10.1.5, 9.12.16; Divisait Sparkspace 1.0.30, 1.1.2, 1.2.4. Check the vendor advisory for mitigations.

References

• https://github.com/blackarrowsec/advisories/tree/master/2019/CVE-2019-18956
• https://github.com/blackarrowsec/advisories/tree/master/2019/CVE-2019-18956

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