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HistoryDec 15, 2015 - 12:00 a.m.

K30518307 : Java commons-collections library vulnerability CVE-2015-4852

2015-12-1500:00:00
my.f5.com
946

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.9 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.967 High

EPSS

Percentile

99.7%

Security Advisory Description

Java applications that have an endpoint that accepts serialized Java objects, an attacker can combine serializable collections to create arbitrary remote code execution. Based on the FoxGlove, an attack can be done via RMI or HTTP. The vulnerability is actually in InvokerTransformer class. If class path exists for commons-collections or commons-collections4, the vulnerability exits in the application.

With InvokerTransformer, serializable collections can be build that execute arbitrary Java code. sun.reflect.annotation.AnnotationInvocationHandler#readObject invokes #entrySet and #get on a deserialized collection. If you have an endpoint that accepts serialized Java objects (JMX, RMI, remote EJB, โ€ฆ) you can combine the two to create arbitrary remote code execution vulnerability.
Impact
The Java common-collections library is shipped with some F5 products, and a local attacker who can send a serialized Java object to the local host could expose the vulnerability.

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.9 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.967 High

EPSS

Percentile

99.7%