CVE-2020-2756

Description

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).

How to fix CVE-2020-2756

To remediate CVE-2020-2756, upgrade the affected package to a fixed version below.

—upgrade to 1.7.0 or later
—upgrade to 1.7.0 or later
—upgrade to 1.7.0 or later
—upgrade to 11.0.7+10-1 or later
—upgrade to 7u261-2.6.22-1~deb8u1 or later

Is CVE-2020-2756 being exploited?

Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.

Affected packages (5)

from 0, < 1.7.0, >= 1.8.0, < 1.8.0, >= 7.0.0, < 7.0.261, >= 8.0.0, < 8.0.251, >= 9.0.0, < 11.0.7, >= 12.0.0, < 14.0.1
from 0, < 1.7.0, >= 1.8.0, < 1.8.0, >= 7.0.0, < 7.0.261, >= 8.0.0, < 8.0.251, >= 9.0.0, < 11.0.7, >= 12.0.0, < 14.0.1
from 0, < 1.7.0, >= 1.8.0, < 1.8.0, >= 7.0.0, < 7.0.261, >= 8.0.0, < 8.0.251, >= 9.0.0, < 11.0.7, >= 12.0.0, < 14.0.1
from 0, < 11.0.7+10-1
from 0, < 7u261-2.6.22-1~deb8u1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	LOW3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L