Multiple vulnerabilities in IBM Secure External Authentication Server

1) Improper input validation

EUVDB-ID: #VU57495

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-35578

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The vulnerability exists due to improper input validation within the JSSE component in Oracle GraalVM Enterprise Edition when processing TLS 1.3 ClientHello packets. A remote non-authenticated attacker can exploit this vulnerability to perform service disruption.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Secure External Authentication Server: before 2.4.3.2 iFix 15

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_secure_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.oracle.com/security-alerts/cpuoct2021.html

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) Man-in-the-Middle (MitM) attack

EUVDB-ID: #VU57487

Risk: Medium

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:Green]

CVE-ID: CVE-2021-35550

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

Description

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

The vulnerability exists due to the JSSE component in Oracle GraalVM Enterprise Edition offers cipher suites in the wrong way, which causes weaker cipher suites to be offered ahead of the strong ones. A remote non-authenticated attacker can exploit this vulnerability to gain access to sensitive information.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Secure External Authentication Server: before 2.4.3.2 iFix 15

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_secure_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.oracle.com/security-alerts/cpuoct2021.html

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 Verification of Cryptographic Signature

EUVDB-ID: #VU55058

Risk: Low

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

CVE-ID: CVE-2021-2369

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

Exploit availability: No

Description

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

The vulnerability exists due to an error in JAR validation implementation. A remote attacker can modify the signed JAR file in a way it will be considered as signed.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Secure External Authentication Server: before 2.4.3.2 iFix 15

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_secure_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.oracle.com/security-alerts/cpujul2021.html

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) Improper input validation

EUVDB-ID: #VU59719

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-21291

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Secure External Authentication Server: before 2.4.3.2 iFix 15

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_secure_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.oracle.com/security-alerts/cpujan2022.html

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) Improper input validation

EUVDB-ID: #VU57496

Risk: Low

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

CVE-ID: CVE-2021-35603

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

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 gain access to sensitive information.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Secure External Authentication Server: before 2.4.3.2 iFix 15

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_secure_external_authentication_server:*:*:*:*:*:*:*:*

External links

https://www.oracle.com/security-alerts/cpuoct2021.html

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.