Vulnerability CVE-2021-33684 - CERT Civis.Net

Vulnerability Name:

CVE-2021-33684 (CCN-205401)

Assigned:

2021-07-13

Published:

2021-07-13

Updated:

2022-10-06

Summary:

SAP NetWeaver AS ABAP and ABAP Platform, versions - KRNL32NUC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL32UC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL64NUC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, KRNL64UC 8.04, 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, 7.53, KERNEL 8.04, 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, 7.53, 7.77, 7.81, 7.84, allows an attacker to send overlong content in the RFC request type thereby crashing the corresponding work process because of memory corruption vulnerability. The work process will attempt to restart itself after the crash and hence the impact on the availability is low.

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:N/A:L)
4.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/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): None Availibility (A): Low

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/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): None Availibility (A): Low

CVSS v2 Severity:

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

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

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

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

Vulnerability Type:

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2021-33684

Source: XF
Type: UNKNOWN
sap-cve202133684-dos(205401)

Source: CCN
Type: SAP Web site
SAP Support Note 3032624

Source: MISC
Type: Permissions Required
https://launchpad.support.sap.com/#/notes/3032624

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

Source: MISC
Type: Vendor Advisory
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=580617506

Vulnerable Configuration:

Configuration 1:

cpe:/a:sap:netweaver_abap:krnl64uc_8.04:*:*:*:*:*:*:*

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

OR cpe:/a:sap:netweaver_abap:7.21:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_abap:7.22:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_abap:7.49:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_abap:7.53:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_abap:7.77:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_abap:7.81:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_abap:krnl32nuc_7.21:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_abap:7.21ext:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_abap:7.22ext:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_abap:krnl32uc_7.21:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_abap:krnl64nuc_7.21:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:7.21:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:7.21ext:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:7.22:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:7.22ext:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:7.49:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:7.53:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:7.77:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:7.81:*:*:*:*:*:*:*

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

OR cpe:/a:sap:netweaver_application_server_abap:krnl32nuc_7.21:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl32uc_7.21:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_application_server_abap:krnl64nuc_7.21:*:*:*:*:*:*:*

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: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_7.77:*:*:*:*:*:*:*

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

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

OR cpe:/a:sap:netweaver_as_abap:krnl32nuc_7.21:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl32uc_7.21:*:*:*:*:*:*:*

OR cpe:/a:sap:netweaver_as_abap:krnl64nuc_7.21:*:*:*:*:*:*:*

Denotes that component is vulnerable