Multiple vulnerabilities in Rational Application Developer for WebSphere Software
| 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 |
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
CVSSv4.0: 5.5 [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:P/U:Green]
CVE-ID: CVE-2021-23362
CWE-ID:
CWE-185 - Incorrect Regular Expression
Exploit availability: No
DescriptionThe 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.
Install update from vendor's website.
Vulnerable software versionsRational Application Developer: 9.6 - 9.7
CPE2.3- cpe:2.3:a:ibm_corporation:rational_application_developer:9.6:*:*:*:*:*:*:*
- cpe:2.3:a:ibm_corporation:rational_application_developer:9.7:*:*:*:*:*:*:*
https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-affect-ibm-rational-application-developer-for-websphere-software-september-2021/
https://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
CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-22921
CWE-ID:
CWE-276 - Incorrect Default Permissions
Exploit availability: No
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsRational Application Developer: 9.6 - 9.7
CPE2.3- cpe:2.3:a:ibm_corporation:rational_application_developer:9.6:*:*:*:*:*:*:*
- cpe:2.3:a:ibm_corporation:rational_application_developer:9.7:*:*:*:*:*:*:*
https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-affect-ibm-rational-application-developer-for-websphere-software-september-2021/
https://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
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-22918
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe 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.
Install update from vendor's website.
Vulnerable software versionsRational Application Developer: 9.6 - 9.7
CPE2.3- cpe:2.3:a:ibm_corporation:rational_application_developer:9.6:*:*:*:*:*:*:*
- cpe:2.3:a:ibm_corporation:rational_application_developer:9.7:*:*:*:*:*:*:*
https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-affect-ibm-rational-application-developer-for-websphere-software-september-2021/
https://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
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-2021-27290
CWE-ID:
CWE-185 - Incorrect Regular Expression
Exploit availability: No
DescriptionThe 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.
Install update from vendor's website.
Vulnerable software versionsRational Application Developer: 9.6 - 9.7
CPE2.3- cpe:2.3:a:ibm_corporation:rational_application_developer:9.6:*:*:*:*:*:*:*
- cpe:2.3:a:ibm_corporation:rational_application_developer:9.7:*:*:*:*:*:*:*
https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-affect-ibm-rational-application-developer-for-websphere-software-september-2021/
https://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.
