Vulnerability Name:

CVE-2021-2351 (CCN-205778)

Assigned:2020-12-09
Published:2021-07-20
Updated:2021-07-29
Summary: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).
CVSS v3 Severity:8.3 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H)
7.2 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.3 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H)
7.2 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:5.1 Medium (CVSS v2 Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.1 High (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Other
References:Source: MITRE
Type: CNA
CVE-2021-2351

Source: XF
Type: UNKNOWN
oracle-cpujul2021-cve20212351(205778)

Source: CCN
Type: Oracle CPUJul2021
Oracle Critical Patch Update Advisory - July 2021

Source: MISC
Type: Patch, Vendor Advisory
https://www.oracle.com/security-alerts/cpujul2021.html

Vulnerable Configuration:Configuration 1:
  • cpe:/a:oracle:advanced_networking_option:12.1.0.2:*:*:*:*:*:*:*
  • OR cpe:/a:oracle:advanced_networking_option:12.2.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:oracle:advanced_networking_option:19c:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/a:oracle:database_server:12.1.0.2:*:*:*:*:*:*:*
  • OR cpe:/a:oracle:database_server:12.2.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:oracle:database_server:19c:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    oracle advanced networking option 12.1.0.2
    oracle advanced networking option 12.2.0.1
    oracle advanced networking option 19c
    oracle database server 12.1.0.2
    oracle database server 12.2.0.1
    oracle database server 19c