Multiple vulnerabilities in Rational Application Developer for WebSphere Software



Published: 2022-09-19
Risk Medium
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2021-23362
CVE-2021-22921
CVE-2021-22918
CVE-2021-27290
CWE-ID CWE-185
CWE-276
CWE-125
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
Subscribe 		Rational Application Developer
Server applications / Other server solutions

Vendor IBM Corporation

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Incorrect Regular Expression

EUVDB-ID: #VU61255

Risk: Medium

CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2021-23362

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

Description

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

The vulnerability exists due to insufficient input validation when processing regular expression "shortcutMatch" in the "fromUrl" function. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Rational Application Developer: 9.6 - 9.7

External links

http://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-affect-ibm-rational-application-developer-for-websphere-software-september-2021/
http://www.ibm.com/support/pages/node/6494661


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. However, proof of concept for this vulnerability is available.

2) Incorrect default permissions

EUVDB-ID: #VU54625

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-22921

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists in Windows installer due to incorrect default permissions for files and folders that are set by the application. A local user with access to the system can view contents of files and directories or modify them.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Rational Application Developer: 9.6 - 9.7

External links

http://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-affect-ibm-rational-application-developer-for-websphere-software-september-2021/
http://www.ibm.com/support/pages/node/6494661


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.

3) Out-of-bounds read

EUVDB-ID: #VU54624

Risk: Medium

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

CVE-ID: CVE-2021-22918

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition in uv__idna_toascii() function in libuv, which is used to convert strings to ASCII. A remote attacker can force the application to resolve a specially crafted hostname, trigger an out-of-bounds read error and gain access to sensitive information or perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Rational Application Developer: 9.6 - 9.7

External links

http://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-affect-ibm-rational-application-developer-for-websphere-software-september-2021/
http://www.ibm.com/support/pages/node/6494661


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) Incorrect Regular Expression

EUVDB-ID: #VU52194

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-2021-27290

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

Description

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

The vulnerability exists due to incorrect processing of SRIs. A remote attacker can pass specially crafted input to the application and perform regular expression denial of service (ReDoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Rational Application Developer: 9.6 - 9.7

External links

http://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-affect-ibm-rational-application-developer-for-websphere-software-september-2021/
http://www.ibm.com/support/pages/node/6494661


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.



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