#VU19937 Information disclosure in jackson-databind - CVE-2019-14439
Vulnerability identifier: #VU19937
Vulnerability risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2019-14439
CWE-ID:
CWE-200
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
jackson-databind
Universal components / Libraries /
Libraries used by multiple products
Vendor: FasterXML
Description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a polymorphic typing issue when Default Typing is enabled for an externally exposed JSON endpoint and the service has the logback jar in the classpath. A remote attacker can send a specially crafted JSON message and gain unauthorized access to sensitive information on the system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
jackson-databind: 2.0.0 - 2.0.4, 2.1.0 - 2.1.4, 2.3.0 - 2.3.5, 2.4.0 - 2.4.6.1, 2.5.0 - 2.5.5, 2.6.0 - 2.6.8, 2.7.0 - 2.7.9.6, 2.8.0 - 2.8.11.4, 2.9.0 - 2.9.9.1
External links
https://github.com/FasterXML/jackson-databind/commit/ad418eeb974e357f2797aef64aa0e3ffaaa6125b
https://github.com/FasterXML/jackson-databind/compare/jackson-databind-2.9.9.1...jackson-databind-2.9.9.2
https://github.com/FasterXML/jackson-databind/issues/2389
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.
