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[email protected]CVE-2021-33683

HistoryJul 14, 2021 - 12:15 p.m.

CVE-2021-33683

2021-07-1412:15:09

CWE-444

[email protected]

web.nvd.nist.gov

sap

web dispatcher

icm

krnl32nuc

krnl32uc

krnl64nuc

krnl64uc

http request smuggling

vulnerability

cybersecurity

nvd

4 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

4.6 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

22.9%

JSON

SAP Web Dispatcher and Internet Communication Manager (ICM), 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 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, 7.53, 7.73, WEBDISP 7.53, 7.73, 7.77, 7.81, 7.82, 7.83, KERNEL 7.21, 7.22, 7.49, 7.53, 7.73, 7.77, 7.81, 7.82, 7.83, process invalid HTTP header. The incorrect handling of the invalid Transfer-Encoding header in a particular manner leads to a possibility of HTTP Request Smuggling attack. An attacker could exploit this vulnerability to bypass web application firewall protection, divert sensitive data such as customer requests, session credentials, etc.

Affected configurations

NVD

Node

sapweb_dispatcherMatch7.8_kernel_7.21

sapweb_dispatcherMatch7.21ext

sapweb_dispatcherMatch7.22

sapweb_dispatcherMatch7.22ext

sapweb_dispatcherMatch7.49

sapweb_dispatcherMatch7.53

sapweb_dispatcherMatch7.73

sapweb_dispatcherMatch7.77

sapweb_dispatcherMatch7.81

sapweb_dispatcherMatch7.82

sapweb_dispatcherMatchkrnl32nuc_7.21

sapweb_dispatcherMatchkrnl32uc_7.21

sapweb_dispatcherMatchkrnl64nuc_7.21

sapweb_dispatcherMatchkrnl64uc_7.21

sapweb_dispatcherMatchwebdisp_7.53

Node

sapinternet_communication_managerMatch7.21ext

sapinternet_communication_managerMatch7.22

sapinternet_communication_managerMatch7.22ext

sapinternet_communication_managerMatch7.49

sapinternet_communication_managerMatch7.53

sapinternet_communication_managerMatch7.73

sapinternet_communication_managerMatch7.77

sapinternet_communication_managerMatch7.81

sapinternet_communication_managerMatch7.82

sapinternet_communication_managerMatchkernel_7.21

sapinternet_communication_managerMatchkrnl32nuc_7.21

sapinternet_communication_managerMatchkrnl32uc_7.21

sapinternet_communication_managerMatchkrnl64nuc_7.21

sapinternet_communication_managerMatchkrnl64uc_7.21

sapinternet_communication_managerMatchwebdisp_7.53

CPENameOperatorVersion
sap:web_dispatchersap web dispatchereq7.8_kernel_7.21
sap:web_dispatchersap web dispatchereq7.21ext
sap:web_dispatchersap web dispatchereq7.22
sap:web_dispatchersap web dispatchereq7.22ext
sap:web_dispatchersap web dispatchereq7.49
sap:web_dispatchersap web dispatchereq7.53
sap:web_dispatchersap web dispatchereq7.73
sap:web_dispatchersap web dispatchereq7.77
sap:web_dispatchersap web dispatchereq7.81
sap:web_dispatchersap web dispatchereq7.82

CPE	Name	Operator	Version
sap:web_dispatcher	sap web dispatcher	eq	7.8_kernel_7.21
sap:web_dispatcher	sap web dispatcher	eq	7.21ext
sap:web_dispatcher	sap web dispatcher	eq	7.22
sap:web_dispatcher	sap web dispatcher	eq	7.22ext
sap:web_dispatcher	sap web dispatcher	eq	7.49
sap:web_dispatcher	sap web dispatcher	eq	7.53
sap:web_dispatcher	sap web dispatcher	eq	7.73
sap:web_dispatcher	sap web dispatcher	eq	7.77
sap:web_dispatcher	sap web dispatcher	eq	7.81
sap:web_dispatcher	sap web dispatcher	eq	7.82

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CNA Affected

[
  {
    "product": "SAP Web Dispatcher and Internet Communication Manager",
    "vendor": "SAP SE",
    "versions": [
      {
        "status": "affected",
        "version": "< KRNL32NUC 7.21"
      },
      {
        "status": "affected",
        "version": "< 7.21EXT"
      },
      {
        "status": "affected",
        "version": "< 7.22"
      },
      {
        "status": "affected",
        "version": "< 7.22EXT"
      },
      {
        "status": "affected",
        "version": "< KRNL32UC 7.21"
      },
      {
        "status": "affected",
        "version": "< KRNL64NUC 7.21"
      },
      {
        "status": "affected",
        "version": "< 7.49"
      },
      {
        "status": "affected",
        "version": "< KRNL64UC 7.21"
      },
      {
        "status": "affected",
        "version": "< 7.53"
      },
      {
        "status": "affected",
        "version": "< 7.73"
      },
      {
        "status": "affected",
        "version": "< WEBDISP 7.53"
      },
      {
        "status": "affected",
        "version": "< 7.77"
      },
      {
        "status": "affected",
        "version": "< 7.81"
      },
      {
        "status": "affected",
        "version": "< 7.82"
      },
      {
        "status": "affected",
        "version": "< 7.83"
      },
      {
        "status": "affected",
        "version": "< KERNEL 7.21"
      }
    ]
  }
]

References

launchpad.support.sap.com/#/notes/3000663

wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=580617506

Social References

4 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

4.6 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

22.9%

JSON

Related for CVE-2021-33683

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