jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.0.0 until 2.18.8, 2.21.4, and 3.1.4, JDKFromStringDeserializer constructed InetSocketAddress with new InetSocketAddress(host, port), which performs eager DNS name resolution for hostname inputs at deserialization time. An application that binds untrusted JSON into a type containing an InetSocketAddress field issues an attacker-chosen DNS query during readValue, before any application-level validation or connect logic.
The fix uses InetSocketAddress.createUnresolved(host, port), deferring DNS to an explicit connect. This vulnerability is fixed in 2.18.8, 2.21.4, and 3.1.4.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Fasterxml Jackson-Databind
cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:*
|
2.0.0
|
2.18.8
|
|
Fasterxml Jackson-Databind
cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:*
|
2.19.0
|
2.21.4
|
|
Fasterxml Jackson-Databind
cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:*
|
3.0.0
|
3.1.4
|
References 3
https://github.com/FasterXML/jackson-databind/commit/1f5a1037b1e9e05920e755cb35…
security-advisories@github.com
https://github.com/FasterXML/jackson-databind/pull/5951
security-advisories@github.com
https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-hgj6-782…
security-advisories@github.com