GHSA-vhrg-v3cv-p247

    Dashboard / Vulnerabilities / GHSA-vhrg-v3cv-p247

    GHSA-vhrg-v3cv-p247

    Published: 13 May 2022Last Modified: 5 Mar 2024
    Aliases:
    CVE-2017-4995

    Summary: Deserialization of Untrusted Data in Spring Security

    Details: 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.

    References: https://nvd.nist.gov/vuln/detail/CVE-2017-4995, https://github.com/FasterXML/jackson-databind/issues/1599, https://github.com/spring-projects/spring-security/issues/4370, https://github.com/FasterXML/jackson-databind/commit/60d459cedcf079c6106ae7da2ac562bc32dcabe1, https://github.com/FasterXML/jackson-databind/commit/6ce32ffd18facac6abdbbf559c817b47fcb622c, https://lists.apache.org/thread.html/4641ed8616ccc2c1fbddac2c3dc9900c96387bc226eaf0232d61909b@%3Ccommits.cassandra.apache.org%3E, https://lists.apache.org/thread.html/r42ac3e39e6265db12d9fc6ae1cd4b5fea7aed9830dc6f6d58228fed7@%3Ccommits.cassandra.apache.org%3E, https://lists.apache.org/thread.html/rf7f87810c38dc9abf9f93989f76008f504cbf7c1a355214640b2d04c@%3Ccommits.cassandra.apache.org%3E, https://pivotal.io/security/cve-2017-4995

    Affected packages

    Package

    Name: org.springframework.security:spring-security-core

    Purl: pkg:maven/org.springframework.security/spring-security-core

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 4.2.0.RELEASE
    Fixed -4.2.3.RELEASE

    Affected versions

    4.2.0.RELEASE
    4.2.1.RELEASE
    4.2.2.RELEASE

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    GHSA-vhrg-v3cv-p247 | CVE-DB