PT-2020-2527 · Oracle · Oracle Weblogic Server

Bui Duong + 5 · Published 2020-04-15 · Updated 2025-10-14 · CVE-2020-2883

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Oracle WebLogic Server versions 10.3.6.0.0 through 12.2.1.4.0

Description The issue is related to the Core component of Oracle WebLogic Server and is caused by inadequate access control. It allows an unauthenticated attacker with network access via IIOP, T3 protocols to compromise the server. Successful attacks can result in the takeover of Oracle WebLogic Server. The vulnerability is easily exploitable and has been exploited in the wild. It is estimated that over 300 vulnerable servers could be exploited, leading to severe security threats.

Recommendations For versions 10.3.6.0.0 through 12.2.1.4.0, update to a version that includes the fix for this issue, as provided in Oracle's April 2020 Critical Patch Update. As a temporary workaround, consider restricting access to the T3 protocol to minimize the risk of exploitation. Additionally, disabling the deserialization of untrusted data in the T3 protocol can help mitigate the issue until a patch is applied.

Exploit

Fix

Weakness Enumeration

CWE-264

Related Identifiers

BDU:2020-02538

CVE-2020-2883

ORACLEWEBLOGICCVE2020_2883

ZDI-20-504

ZDI-20-570

Affected Products

Oracle Weblogic Server

References · 46

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/misc/weblogic_deserialize_badattr_extcomp.rb · Exploit
• 🔥 https://github.com/Y4er/WebLogic-Shiro-shell · Exploit
• 🔥 https://github.com/Y4er/CVE-2020-2883 · Exploit
• 🔥 https://github.com/MagicZer0/Weblogic_CVE-2020-2883_POC · Exploit
• 🔥 https://github.com/Al1ex/CVE-2020-2883 · Exploit
• https://safe-surf.ru/specialists/bulletins-nkcki/650493 · Security Note
• https://bdu.fstec.ru/vul/2020-02538 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-20-570 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-20-504 · Security Note
• https://osv.dev/vulnerability/CVE-2020-2883 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-2883 · Security Note
• https://twitter.com/CriminalIP_US/status/1881748597219184869 · Twitter Post
• https://twitter.com/IT_news_for_all/status/1876847128087015696 · Twitter Post
• https://twitter.com/dailycve/status/1876657234207490397 · Twitter Post
• https://twitter.com/securityRSS/status/1877031154492059810 · Twitter Post