Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2020-2756

Deserialization of Untrusted Data

Published: Apr 15, 2020 | Modified: Nov 21, 2024
CVSS 3.x
3.7
LOW
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
3.7 LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Ubuntu
LOW
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2020-2756
CWEhttps://cwe.mitre.org/data/definitions/502.html

Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Serialization). Supported versions that are affected are Java SE: 7u251, 8u241, 11.0.6 and 14; Java SE Embedded: 8u241. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, Java SE Embedded. Note: Applies to client and server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web service. CVSS 3.0 Base Score 3.7 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

NameVendorStart VersionEnd Version
JdkOracle1.7.0-update251 (including)1.7.0-update251 (including)
JdkOracle1.8.0-update241 (including)1.8.0-update241 (including)
JdkOracle11.0.6 (including)11.0.6 (including)
JdkOracle14.0.0 (including)14.0.0 (including)
JreOracle1.7.0-update251 (including)1.7.0-update251 (including)
JreOracle1.8.0-update241 (including)1.8.0-update241 (including)
JreOracle11.0.6 (including)11.0.6 (including)
JreOracle14.0.0 (including)14.0.0 (including)
Red Hat Enterprise Linux 6RedHatjava-1.8.0-openjdk-1:1.8.0.252.b09-2.el6_10*
Red Hat Enterprise Linux 6RedHatjava-1.7.0-openjdk-1:1.7.0.261-2.6.22.1.el6_10*
Red Hat Enterprise Linux 6 SupplementaryRedHatjava-1.7.1-ibm-1:1.7.1.4.65-1jpp.1.el6_10*
Red Hat Enterprise Linux 6 SupplementaryRedHatjava-1.8.0-ibm-1:1.8.0.6.10-1jpp.1.el6_10*
Red Hat Enterprise Linux 7RedHatjava-1.7.0-openjdk-1:1.7.0.261-2.6.22.2.el7_8*
Red Hat Enterprise Linux 7RedHatjava-11-openjdk-1:11.0.7.10-4.el7_8*
Red Hat Enterprise Linux 7RedHatjava-1.8.0-openjdk-1:1.8.0.252.b09-2.el7_8*
Red Hat Enterprise Linux 7 SupplementaryRedHatjava-1.8.0-ibm-1:1.8.0.6.10-1jpp.1.el7*
Red Hat Enterprise Linux 7 SupplementaryRedHatjava-1.7.1-ibm-1:1.7.1.4.65-1jpp.1.el7*
Red Hat Enterprise Linux 8RedHatjava-11-openjdk-1:11.0.7.10-1.el8_1*
Red Hat Enterprise Linux 8RedHatjava-1.8.0-openjdk-1:1.8.0.252.b09-2.el8_1*
Red Hat Enterprise Linux 8RedHatjava-1.8.0-ibm-1:1.8.0.6.10-1.el8_2*
Red Hat Enterprise Linux 8.0 Update Services for SAP SolutionsRedHatjava-1.8.0-openjdk-1:1.8.0.252.b09-2.el8_0*
Red Hat Enterprise Linux 8.0 Update Services for SAP SolutionsRedHatjava-11-openjdk-1:11.0.7.10-1.el8_0*
Openjdk-14Ubuntudevel*
Openjdk-14Ubuntueoan*
Openjdk-14Ubuntutrusty*
Openjdk-14Ubuntuupstream*
Openjdk-7Ubuntutrusty*
Openjdk-8Ubuntubionic*
Openjdk-8Ubuntueoan*
Openjdk-8Ubuntuesm-apps/bionic*
Openjdk-8Ubuntuesm-infra/xenial*
Openjdk-8Ubuntutrusty*
Openjdk-8Ubuntuupstream*
Openjdk-8Ubuntuxenial*
Openjdk-ltsUbuntubionic*
Openjdk-ltsUbuntudevel*
Openjdk-ltsUbuntueoan*
Openjdk-ltsUbuntuesm-infra/bionic*
Openjdk-ltsUbuntuesm-infra/focal*
Openjdk-ltsUbuntufocal*
Openjdk-ltsUbuntutrusty*
Openjdk-ltsUbuntuupstream*

Potential Mitigations

  • Make fields transient to protect them from deserialization.
  • An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

References

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