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Code injection in FasterXML jackson-databind



Published: 2020-02-19 | Updated: 2020-02-24
Severity Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-8840
CWE ID CWE-94
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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jackson-databind
Universal components / Libraries / Libraries used by multiple products

Vendor FasterXML

Security Advisory

Updated: 24.02.2020

Updated list of fixed versions.

1) Code Injection

Severity: Medium

CVSSv3: 4.9 [CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-8840

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: Yes [Search exploit]

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to absence of xbean-reflect/JNDI gadget blocking. A remote attacker can pass specially crafted input to the application and execute arbitrary Java code on the system, as demonstrated by org.apache.xbean.propertyeditor.JndiConverter.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

jackson-databind: 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.5, 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.4.0, 2.4.1, 2.4.1.1, 2.4.1.2, 2.4.1.3, 2.4.2, 2.4.3, 2.4.4, 2.4.5, 2.4.5.1, 2.4.6, 2.4.6.1, 2.5.0, 2.5.1, 2.5.2, 2.5.3, 2.5.4, 2.5.5, 2.6.0, 2.6.1, 2.6.2, 2.6.3, 2.6.4, 2.6.5, 2.6.6, 2.6.7, 2.6.7.1, 2.6.7.2, 2.6.7.3, 2.6.8, 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.7.5, 2.7.6, 2.7.7, 2.7.8, 2.7.9, 2.7.9.1, 2.7.9.2, 2.7.9.3, 2.7.9.4, 2.7.9.5, 2.7.9.6, 2.8.0, 2.8.1, 2.8.2, 2.8.3, 2.8.4, 2.8.5, 2.8.6, 2.8.7, 2.8.8, 2.8.8.1, 2.8.9, 2.8.10, 2.8.11, 2.8.11.1, 2.8.11.2, 2.8.11.3, 2.8.11.4, 2.9.0, 2.9.1, 2.9.2, 2.9.3, 2.9.4, 2.9.5, 2.9.6, 2.9.7, 2.9.8, 2.9.9, 2.9.9.1, 2.9.9.2, 2.9.9.3, 2.9.10, 2.9.10.1, 2.9.10.2

CPE External links

https://github.com/FasterXML/jackson-databind/issues/2620

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.