Multiple vulnerabilities in Oracle Communications Evolved Communications Application Server
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2020-17521 CVE-2019-10086 CVE-2020-25649 |
| CWE-ID | CWE-276 CWE-693 CWE-611 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Oracle Communications Evolved Communications Application Server Server applications / Application servers |
| Vendor | Oracle |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Incorrect default permissions
EUVDB-ID: #VU48792
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-2020-17521
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 due to incorrect default permissions for temporary 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 versionsOracle Communications Evolved Communications Application Server: 7.1
CPE2.3 External linkshttps://www.oracle.com/security-alerts/cpujul2021.html?534786
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.
2) Protection mechanism failure
EUVDB-ID: #VU20844
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-2019-10086
CWE-ID:
CWE-693 - Protection Mechanism Failure
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exist due to Beanutils is not using by default the a special BeanIntrospector class in PropertyUtilsBean that was supposed to suppress the ability for an attacker to access the classloader via the class property available on all Java objects. A remote attacker can abuse such application behavior against applications that were developed to rely on this security feature.
MitigationInstall update from vendor's website.
Vulnerable software versionsOracle Communications Evolved Communications Application Server: 7.1
CPE2.3 External linkshttps://www.oracle.com/security-alerts/cpujul2021.html?534786
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) XML External Entity injection
EUVDB-ID: #VU48979
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-25649
CWE-ID:
CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to modify information on the system.
The vulnerability exists due to insufficient validation of user-supplied XML input. A remote attacker can pass a specially crafted XML code to the affected application and modify information on the system.
Install update from vendor's website.
Vulnerable software versionsOracle Communications Evolved Communications Application Server: 7.1
CPE2.3 External linkshttps://www.oracle.com/security-alerts/cpujul2021.html?534786
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.
