#VU25831 Deserialization of Untrusted Data


Published: 2020-03-18 | Updated: 2020-04-12

Vulnerability identifier: #VU25831

Vulnerability risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-9547

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
jackson-databind
Universal components / Libraries / Libraries used by multiple products

Vendor: FasterXML

Description

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

The vulnerability exists due to insecure input validation when processing serialized data between serialization gadgets and typing. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

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

Note: This vulnerability is related to:

  • com.ibatis.sqlmap.engine.transaction.jta.JtaTransactionConfig (aka ibatis-sqlmap)

Mitigation
Install updates from vendor's website.

Vulnerable software versions

jackson-databind: 2.0.0 - 2.9.10.3


CPE

External links
http://github.com/FasterXML/jackson-databind/issues/2634
http://lists.apache.org/thread.html/r35d30db00440ef63b791c4b7f7acb036e14d4a23afa2a249cb66c0fd@%3Cissues.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r742ef70d126548dcf7de5be5779355c9d76a9aec71d7a9ef02c6398a@%3Cnotifications.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r893a0104e50c1c2559eb9a5812add28ae8c3e5f43712947a9847ec18@%3Cnotifications.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r9464a40d25c3ba1a55622db72f113eb494a889656962d098c70c5bb1@%3Cdev.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/ra3e90712f2d59f8cef03fa796f5adf163d32b81fe7b95385f21790e6@%3Cnotifications.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/rb6fecb5e96a6d61e175ff49f33f2713798dd05cf03067c169d195596@%3Cissues.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/rd0e958d6d5c5ee16efed73314cd0e445c8dbb4bdcc80fc9d1d6c11fc@%3Cdev.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/rdd49ab9565bec436a896bc00c4b9fc9dce1598e106c318524fbdfec6@%3Cissues.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/redbe4f1e21bf080f637cf9fbec47729750a2f443a919765360337428@%3Cnotifications.zookeeper.apache.org%3E
http://lists.debian.org/debian-lts-announce/2020/03/msg00008.html
http://medium.com/@cowtowncoder/on-jackson-cves-dont-panic-here-is-what-you-need-to-know-54cd0d6e8062


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. However, proof of concept for this vulnerability is available.


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