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CVE-2017-9830: Code42 Crashplan: Insecure deserialization
CVE-2017-9830 is rated critical with a CVSS v3.0 base score of 9.8 and affects Code42 Crashplan. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.
Vulnerability description
Remote Code Execution is possible in Code42 CrashPlan 5.4.x via the org.apache.commons.ssl.rmi.DateRMI Java class, because (upon instantiation) it creates an RMI server that listens on a TCP port and deserializes objects sent by TCP clients.
Severity breakdown
CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
- Attack complexity: Low. No special conditions; the attack can be repeated reliably.
- Privileges required: None. No account or prior access is needed.
- User interaction: None. No action from any user is needed.
- Scope: Unchanged. Impact stays within the vulnerable component.
- Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
- Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
- Availability impact: High. Total loss of availability; the component can be shut down.
Underlying weakness
CWE-502: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
Affected products
- Code42 Crashplan: 5.4