#VU59148 Deserialization of Untrusted Data in jackson-databind and jackson-core - CVE-2021-46877

Vulnerability identifier: #VU59148

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-46877

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: No

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

Vendor: FasterXML

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insecure input validation when processing serialized JsonNode values. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Note, the vulnerability affects JDK serialization only.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

jackson-databind: 2.10.0 - 2.13.0

jackson-core: 2.10.0 - 2.13.0

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External links
https://snyk.io/vuln/SNYK-JAVA-COMFASTERXMLJACKSONCORE-2326698
https://github.com/FasterXML/jackson-databind/issues/3328
https://github.com/FasterXML/jackson-databind/commit/3ccde7d938fea547e598fdefe9a82cff37fed5cb

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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.