CVE-2017-4995

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 27-11-2017 11:29

Last modified: - 18-04-2022 07:54

Total changes: - 4

Description

An issue was discovered in Pivotal Spring Security 4.2.0.RELEASE through 4.2.2.RELEASE, and Spring Security 5.0.0.M1. When configured to enable default typing, Jackson contained a deserialization vulnerability that could lead to arbitrary code execution. Jackson fixed this vulnerability by blacklisting known "deserialization gadgets." Spring Security configures Jackson with global default typing enabled, which means that (through the previous exploit) arbitrary code could be executed if all of the following is true: (1) Spring Security's Jackson support is being leveraged by invoking SecurityJackson2Modules.getModules(ClassLoader) or SecurityJackson2Modules.enableDefaultTyping(ObjectMapper); (2) Jackson is used to deserialize data that is not trusted (Spring Security does not perform deserialization using Jackson, so this is an explicit choice of the user); and (3) there is an unknown (Jackson is not blacklisting it already) "deserialization gadget" that allows code execution present on the classpath. Jackson provides a blacklisting approach to protecting against this type of attack, but Spring Security should be proactive against blocking unknown "deserialization gadgets" when Spring Security enables default typing.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

High

Attack complexity

Network

Attack vector

High

Availability

High

Confidentiality

High

Integrity

None

Privileges required

Unchanged

Scope

None

User interaction

8.1

Base score

2.2

5.9

Exploitability score

Impact score

Verification logic

vendor=vmware AND product=spring_security AND version=4.2.2 AND update=release

vendor=vmware AND product=spring_security AND version=4.2.0 AND update=release

vendor=vmware AND product=spring_security AND version=4.2.1 AND update=release

vendor=vmware AND product=spring_security AND version=5.0.0 AND update=m1

Reference

https://pivotal.io/security/cve-2017-4995
99080-Broken Link
[cassandra-commits] 20191113 [jira] [Created] (CASSANDRA-15416) CVE-2017-7525 ( jackson-databind is vulnerable to Remote Code Execution) on version 3.11.4-Mailing List, Third Party Advisory
[cassandra-commits] 20210927 [jira] [Commented] (CASSANDRA-15416) CVE-2017-7525 ( jackson-databind is vulnerable to Remote Code Execution) on version 3.11.4-Mailing List, Third Party Advisory
[cassandra-commits] 20210927 [jira] [Updated] (CASSANDRA-15416) CVE-2017-7525 ( jackson-databind is vulnerable to Remote Code Execution) on version 3.11.4-Mailing List, Third Party Advisory

Keywords

CVE-2017-4995

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2017-4995

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures