Vulnerability CVE-2021-33663 - CERT Civis.Net

Vulnerability Name:

CVE-2021-33663 (CCN-203389)

Assigned:

2021-06-08

Published:

2021-06-08

Updated:

2022-10-05

Summary:

SAP NetWeaver AS ABAP, versions - KRNL32NUC - 7.22,7.22EXT, KRNL32UC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73,7.77,7.81,7.82,7.83,7.84, allows an unauthorized attacker to insert cleartext commands due to improper restriction of I/O buffering into encrypted SMTP sessions over the network which can partially impact the integrity of the application.

CVSS v3 Severity:

5.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
4.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): Low Availibility (A): None

5.8 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N)
5.1 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Changed
Impact Metrics:	Confidentiality (C): None Integrity (I): Low Availibility (A): None

CVSS v2 Severity:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

Vulnerability Type:

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2021-33663

Source: XF
Type: UNKNOWN
sap-cve202133663-sec-bypass(203389)

Source: CCN
Type: SAP Web site
SAP Support Note 3030604

Source: MISC
Type: Permissions Required, Vendor Advisory
https://launchpad.support.sap.com/#/notes/3030604

Source: CCN
Type: SAP Security Patch Day - June 2021
SAP Security Patch Day - June 2021

Source: MISC
Type: Vendor Advisory
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999

Vulnerable Configuration:

Configuration 1:

cpe:/a:sap:netweaver_application_server_abap:krnl64nuc_7.49:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl64uc_7.49:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl64uc_7.53:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:kernel_7.49:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:kernel_7.53:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:kernel_7.77:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:kernel_7.81:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:kernel_7.84:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl32nuc_7.22:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:kernel_7.22:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:kernel_7.73:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:kernel_7.82:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:kernel_7.83:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:kernel_8.04:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl32nuc_7.22ext:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl32uc_7.22:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl32uc_7.22ext:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl64nuc_7.22:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl64nuc_7.22ext:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl64uc_7.22:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl64uc_7.22ext:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl64uc_7.73:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl64uc_8.04:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:sap:netweaver_as_abap:krnl32nuc_7.22:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl32nuc_7.22ext:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl32uc_7.22:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl32uc_7.22ext:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl64nuc_7.22:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl64nuc_7.22ext:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl64nuc_7.49:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl64uc_8.04:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl64uc_7.22:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl64uc_7.22ext:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl64uc_7.49:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl64uc_7.53:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl64uc_7.73:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:kernel_7.22:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:kernel_8.04:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:kernel_7.49:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:kernel_7.53:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:kernel_7.73:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:kernel_7.77:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:kernel_7.81:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:kernel_7.82:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:kernel_7.83:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:kernel_7.84:*:*:*:*:*:*:*

Denotes that component is vulnerable