Threat Signal Report

Out of Band Advisory (CVE-2020-14750) Remote Code Execution Vulnerability in Oracle Weblogic

Description

FortiGuard Labs is aware of a new out-of-band security advisory released by Oracle detailing a remote code execution vulnerability in Oracle WebLogic Server assigned CVE-2020-14750.

According to the advisory, the vulnerability is similar to CVE-2020-14882, which was patched in the October 2020 release and allows a remote attacker to fully compromise an Oracle WebLogic Server without a username and password via a single HTTP get request.

The United States Cybersecurity and Infrastructure Security Agency (CISA) has also issued a current activity alert for this issue as well.

What are the Technical Details of the Vulnerability?
Details at this moment remain vague. However, according to Oracle, this is an easily exploitable vulnerability that allows for a remote attacker to fully compromise an affected Oracle Weblogic server via an HTTP connection without a username and password. This will effectively allow for full control of the Oracle Weblogic Server and as well, full compromise.

Are there Reports of Active Exploitation in the Wild?
No. However, as there are reports of proof of concept code exploiting CVE-2020-14750 observed in the wild, it will only be a matter of time. Because of this, along with the ease of exploitation via a remote unauthenticated session, makes in the wild attacks highly imminent.

What Versions of Software are Affected?
Oracle WebLogic Server versions 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, 14.1.1.0.0 are affected.

Has the Vendor Issued a Patch?
Yes. Please see the APPENDIX section for a link to the vendor website.

How Serious of a Vulnerability is this?
HIGH. This vulnerability has a CVSS score of 9.8 (10 the highest). An attacker can control machines remotely, as well as uploading and performing remote code execution on the affected server.

What is the Status of AV or IPS Coverage?
An IPS signature is being investigated for feasibility. We will update this threat signal with relevant signature information once available.

What Mitigation is Available if Any?
As this issue is closest to the highest CVSS score 9.8/10 (CRITICAL) allowed and is highly exploitable, it is recommended to patch immediately. Due to the ease of exploitation of this vulnerability, if a patch cannot be applied, it is recommended to remove all affected public facing machines immediately from the network.

MITRE ATT&CK
Exploit Public-Facing Application
ID: T1190
Tactic: Initial Access

Definitions

Traffic Light Protocol

Color When Should it Be used? How may it be shared?

TLP: RED

Not for disclosure, restricted to participants only.
Sources may use TLP:RED when information cannot be effectively acted upon by additional parties, and could lead to impacts on a party's privacy, reputation, or operations if misused. Recipients may not share TLP:RED information with any parties outside of the specific exchange, meeting, or conversation in which it was originally disclosed. In the context of a meeting, for example, TLP:RED information is limited to those present at the meeting. In most circumstances, TLP:RED should be exchanged verbally or in person.

TLP: AMBER

Limited disclosure, restricted to participants’ organizations.
Sources may use TLP:AMBER when information requires support to be effectively acted upon, yet carries risks to privacy, reputation, or operations if shared outside of the organizations involved. Recipients may only share TLP:AMBER information with members of their own organization, and with clients or customers who need to know the information to protect themselves or prevent further harm. Sources are at liberty to specify additional intended limits of the sharing: these must be adhered to.

TLP: GREEN

Limited disclosure, restricted to the community.
Sources may use TLP:GREEN when information is useful for the awareness of all participating organizations as well as with peers within the broader community or sector. Recipients may share TLP:GREEN information with peers and partner organizations within their sector or community, but not via publicly accessible channels. Information in this category can be circulated widely within a particular community. TLP:GREEN information may not be released outside of the community.

TLP: WHITE

Disclosure is not limited.
Sources may use TLP:WHITE when information carries minimal or no foreseeable risk of misuse, in accordance with applicable rules and procedures for public release. Subject to standard copyright rules, TLP:WHITE information may be distributed without restriction.