Multiple vulnerabilities in IBM Sterling External Authentication Server

1) Resource exhaustion

EUVDB-ID: #VU75218

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-26048

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 when processing multipart requests in request.getParameter(). A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling External Authentication Server: before 6.0.3.0 iFix 08

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7029765

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) Input validation error

EUVDB-ID: #VU75217

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-26049

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient input validation when parsing cookies. A remote attacker can send a specially crafted HTTP request with a cookie value that starts with a double quote and force the application to read the cookie string until it sees a closing quote. Such behavior can be used to exfiltrate sensitive values from other cookies.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling External Authentication Server: before 6.0.3.0 iFix 08

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7029765

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.

3) Improper input validation

EUVDB-ID: #VU75260

Risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-21930

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

The vulnerability exists due to improper input validation within the JSSE component in Oracle GraalVM Enterprise Edition. A remote non-authenticated attacker can exploit this vulnerability to read and manipulate data.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling External Authentication Server: before 6.0.3.0 iFix 08

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7029765

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.

4) Out-of-bounds write

EUVDB-ID: #VU69673

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-40149

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error when processing untrusted XML or JSON data. A remote attacker can pass specially crafted input to the application, trigger an out-of-bounds write and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling External Authentication Server: before 6.0.3.0 iFix 08

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7029765

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) Resource exhaustion

EUVDB-ID: #VU69674

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-40150

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 when processing untrusted XML or JSON data. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling External Authentication Server: before 6.0.3.0 iFix 08

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7029765

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.

6) Out-of-bounds write

EUVDB-ID: #VU71108

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-45685

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error when processing crafted JSON data. A remote attacker can pass specially crafted input to the application, trigger an out-of-bounds write and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling External Authentication Server: before 6.0.3.0 iFix 08

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7029765

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) Out-of-bounds write

EUVDB-ID: #VU71109

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-45693

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error when processing data passed via the map parameter. A remote attacker can pass specially crafted input to the application, trigger an out-of-bounds write and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling External Authentication Server: before 6.0.3.0 iFix 08

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7029765

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) Uncontrolled Recursion

EUVDB-ID: #VU75431

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-1436

CWE-ID: CWE-674 - Uncontrolled Recursion

Exploit availability: No

Description

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

The vulnerability exists due to uncontrolled recursion when constructing a JSONArray from a Collection that contains a self-reference in one of its elements. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling External Authentication Server: before 6.0.3.0 iFix 08

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7029765

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.

9) Cleartext storage of sensitive information

EUVDB-ID: #VU80326

Risk: Low

CVSSv4.0: 2.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-32338

CWE-ID: CWE-312 - Cleartext Storage of Sensitive Information

Exploit availability: No

Description

The vulnerability allows a local attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A local attacker can gain unauthorized access to sensitive information on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling External Authentication Server: before 6.0.3.0 iFix 08

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7029765

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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

10) Deserialization of Untrusted Data

EUVDB-ID: #VU78901

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-40609

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling External Authentication Server: before 6.0.3.0 iFix 08

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7029765

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.

11) Code Injection

EUVDB-ID: #VU51511

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-13936

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote attacker with ability to modify Velocity templates can inject and execute arbitrary Java code on the system with the same privileges as the account running the Servlet container.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling External Authentication Server: before 6.0.3.0 iFix 08

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7029765

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.

12) Information disclosure

EUVDB-ID: #VU80327

Risk: Low

CVSSv4.0: 2.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-29261

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A local attacker can gain unauthorized access to sensitive information on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling External Authentication Server: before 6.0.3.0 iFix 08

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/7029765

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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