Multiple vulnerabilities in IBM MaaS360 Cloud Extender Agent, Mobile Enterprise Gateway and VPN Module

Published: 2024-02-07 | Updated: 2024-03-22

Risk	High
Patch available	YES
Number of vulnerabilities	10
CVE-ID	CVE-2023-36478 CVE-2023-44487 CVE-2023-41900 CVE-2023-40167 CVE-2023-36479 CVE-2023-34462 CVE-2023-4807 CVE-2023-46849 CVE-2023-46850 CVE-2023-5363
CWE-ID	CWE-190 CWE-400 CWE-285 CWE-444 CWE-20 CWE-369 CWE-416 CWE-310
Exploitation vector	Network
Public exploit	Vulnerability #2 is being exploited in the wild.
Vulnerable software Subscribe	IBM MaaS360 Mobile Enterprise Gateway Server applications / Other server solutions IBM MaaS360 Cloud Extender Agent Server applications / Other server solutions IBM MaaS360 VPN Module Server applications / Remote access servers, VPN
Vendor	IBM Corporation

Security Bulletin

This security bulletin contains information about 10 vulnerabilities.

1) Integer overflow

EUVDB-ID: #VU81726

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-36478

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to integer overflow in MetaDataBuilder.checkSize when handling HTTP/2 HPACK header values. A remote attacker can send specially crafted request to the server, trigger an integer overflow and crash the server.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MaaS360 Mobile Enterprise Gateway: before 3.000.400

IBM MaaS360 VPN Module: before 3.000.400

IBM MaaS360 Cloud Extender Agent: before 3.000.300.025

External links

http://www.ibm.com/support/pages/node/7115287

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Resource exhaustion

EUVDB-ID: #VU81728

Risk: High

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-44487

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improperly control of consumption for internal resources when handling HTTP/2 requests with compressed HEADERS frames. A remote attacker can send a sequence of compressed HEADERS frames followed by RST_STREAM frames and perform a denial of service (DoS) attack, a.k.a. "Rapid Reset".

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MaaS360 Mobile Enterprise Gateway: before 3.000.400

IBM MaaS360 VPN Module: before 3.000.400

IBM MaaS360 Cloud Extender Agent: before 3.000.300.025

External links

http://www.ibm.com/support/pages/node/7115287

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.

3) Improper Authorization

EUVDB-ID: #VU80793

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-41900

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to an error in the revocation process. If a Jetty OpenIdAuthenticator uses the optional nested LoginService, and that LoginService decides to revoke an already authenticated user, then the current request will still treat the user as authenticated.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MaaS360 Mobile Enterprise Gateway: before 3.000.400

IBM MaaS360 VPN Module: before 3.000.400

IBM MaaS360 Cloud Extender Agent: before 3.000.300.025

External links

http://www.ibm.com/support/pages/node/7115287

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU80791

Risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-40167

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests when handling the "+" character passed via the HTTP/1 header field. A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MaaS360 Mobile Enterprise Gateway: before 3.000.400

IBM MaaS360 VPN Module: before 3.000.400

IBM MaaS360 Cloud Extender Agent: before 3.000.300.025

External links

http://www.ibm.com/support/pages/node/7115287

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Input validation error

EUVDB-ID: #VU80792

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-36479

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote user to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input in org.eclipse.jetty.servlets.CGI Servlet when quoting a command before its execution. A remote user can force the application to execute arbitrary file on the server and potentially compromise the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MaaS360 Mobile Enterprise Gateway: before 3.000.400

IBM MaaS360 VPN Module: before 3.000.400

IBM MaaS360 Cloud Extender Agent: before 3.000.300.025

External links

http://www.ibm.com/support/pages/node/7115287

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Resource exhaustion

EUVDB-ID: #VU77573

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-34462

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources if no idle timeout handler was configured. A remote attacker can send a client hello packet, which leads the server to buffer up to 16MB of data per connection and results in a denial of service condition.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MaaS360 Mobile Enterprise Gateway: before 3.000.400

IBM MaaS360 VPN Module: before 3.000.400

IBM MaaS360 Cloud Extender Agent: before 3.000.300.025

External links

http://www.ibm.com/support/pages/node/7115287

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Input validation error

EUVDB-ID: #VU80565

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4807

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the POLY1305 MAC (message authentication code) implementation. A remote attacker can send specially crafted input to the application and corrupt MM registers on Windows 64 platform, resulting in a denial of service condition.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MaaS360 Mobile Enterprise Gateway: before 3.000.400

IBM MaaS360 VPN Module: before 3.000.400

IBM MaaS360 Cloud Extender Agent: before 3.000.300.025

External links

http://www.ibm.com/support/pages/node/7115287

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Division by zero

EUVDB-ID: #VU82952

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-46849

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

The vulnerability allows a remote client to perform a denial of service (DoS) attack.

The vulnerability exists due to server incorrectly restores "--fragment" configuration under certain circumstances. A remote client can cause a divide by zero error and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MaaS360 Mobile Enterprise Gateway: before 3.000.400

IBM MaaS360 VPN Module: before 3.000.400

IBM MaaS360 Cloud Extender Agent: before 3.000.300.025

External links

http://www.ibm.com/support/pages/node/7115287

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

9) Use-after-free

EUVDB-ID: #VU82951

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-46850

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to openvpn incorrectly uses a send buffer after it has been freed. Under certain circumstances the freed memory can be sent to the client peer, resulting in information disclosure. The vulnerability affects TLS configuration.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MaaS360 Mobile Enterprise Gateway: before 3.000.400

IBM MaaS360 VPN Module: before 3.000.400

IBM MaaS360 Cloud Extender Agent: before 3.000.300.025

External links

http://www.ibm.com/support/pages/node/7115287

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

10) Cryptographic issues

EUVDB-ID: #VU82349

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5363

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to an error when processing key and initialisation vector lengths in EVP_EncryptInit_ex2(), EVP_DecryptInit_ex2() and EVP_CipherInit_ex2() function. A remote attacker can gain access to potentially sensitive information.

The following ciphers and cipher modes are impacted: RC2, RC4, RC5, CCM, GCM and OCB.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM MaaS360 Mobile Enterprise Gateway: before 3.000.400

IBM MaaS360 VPN Module: before 3.000.400

IBM MaaS360 Cloud Extender Agent: before 3.000.300.025

External links

http://www.ibm.com/support/pages/node/7115287

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.