CVE-2021-2351
Summary
| CVE | CVE-2021-2351 |
|---|---|
| State | PUBLISHED |
| Assigner | oracle |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-07-21 15:15:21 UTC |
| Updated | 2026-08-25 16:28:27 UTC |
| Description | Vulnerability in the Advanced Networking Option component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Difficult to exploit vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Advanced Networking Option. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Advanced Networking Option, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Advanced Networking Option. Note: The July 2021 Critical Patch Update introduces a number of Native Network Encryption changes to deal with vulnerability CVE-2021-2351 and prevent the use of weaker ciphers. Customers should review: "Changes in Native Network Encryption with the July 2021 Critical Patch Update" (Doc ID 2791571.1). CVSS 3.1 Base Score 8.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H). |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Problem Types: CWE-327 | CWE-384 | Difficult to exploit vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Advanced Networking Option. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Advanced Networking Option, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Advanced Networking Option.
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| 3.1 | [email protected] | Secondary | 8.3 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 8.3 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 5.1 | AV:N/AC:H/Au:N/C:P/I:P/A:P |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
NoneUser Interaction
RequiredScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
HighAuthentication
NoneConfidentiality
PartialIntegrity
PartialAvailability
PartialAV:N/AC:H/Au:N/C:P/I:P/A:P
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Oracle Corporation | WebLogic Server | affected 12.2.1.3.0 | Not specified |
| CNA | Oracle Corporation | WebLogic Server | affected 12.2.1.4.0 | Not specified |
| CNA | Oracle Corporation | WebLogic Server | affected 14.1.1.0.0 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Oracle Critical Patch Update Advisory - April 2022 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | Patch, Vendor Advisory |
| Oracle Critical Patch Update Advisory - October 2021 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | Patch, Vendor Advisory |
| Oracle Critical Patch Update Advisory - July 2021 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | Patch, Vendor Advisory |
| Oracle Database Protection Mechanism Bypass ≈ Packet Storm | af854a3a-2127-422b-91ae-364da2661108 | packetstormsecurity.com | Exploit, Third Party Advisory, VDB Entry |
| Oracle Critical Patch Update Advisory - January 2022 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | Patch, Vendor Advisory |
| Oracle Critical Patch Update Advisory - July 2022 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | Vendor Advisory |
| Oracle Database Weak NNE Integrity Key Derivation ≈ Packet Storm | af854a3a-2127-422b-91ae-364da2661108 | packetstormsecurity.com | Exploit, Third Party Advisory, VDB Entry |
| Full Disclosure: [SYSS-2021-062] Oracle Database - Weak NNE Integrity Key Derivation | af854a3a-2127-422b-91ae-364da2661108 | seclists.org | Exploit, Mailing List, Third Party Advisory |
| Full Disclosure: [SYSS-2021-061] Oracle Database - NNE Connection Hijacking | af854a3a-2127-422b-91ae-364da2661108 | seclists.org | Exploit, Mailing List, Third Party Advisory |
| Oracle Critical Patch Update Advisory - January 2023 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 20226 Oracle Database 19c Critical Patch Update - July 2021
- 20227 Oracle Database 12.2.0.1 Critical Patch Update - July 2021
- 20228 Oracle Database 12.2.0.1 Critical Patch Update - July 2021 (Unauthenticated)
- 20229 Oracle Database 12.1.0.2 Critical Patch Update - July 2021
- 20230 Oracle Database 12.1.0.2 Critical Patch Update - July 2021 (Unauthenticated)
- 20279 Oracle Database 19c Critical OJVM Patch Update - July 2021
- 20315 Oracle Database 12.2.0.1 Critical OJVM Patch Update - July 2021
- 376257 Oracle PeopleSoft Enterprise PeopleTools Product Multiple Vulnerabilities (CPUJAN2022)