Multiple vulnerabilities in PostgreSQL
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-32027 CVE-2021-32028 CVE-2021-32029 |
| CWE-ID | CWE-190 CWE-401 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
PostgreSQL Server applications / Database software |
| Vendor | PostgreSQL Global Development Group |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Integer overflow
EUVDB-ID: #VU53231
Risk: Medium
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:Green]
CVE-ID: CVE-2021-32027
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow when processing certain SQL array values during array subscribing calculation. An authenticated database user can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system and can be exploited by a remote unauthenticated attacker via SQL injection vulnerability in the frontend application.
Install updates from vendor's website.
Vulnerable software versionsPostgreSQL: 9.6.0 - 13.2
CPE2.3- cpe:2.3:a:postgresql_global_development_group:postgresql:9.6.21:*:*:*:*:*:*:*
- cpe:2.3:a:postgresql_global_development_group:postgresql:13.2:*:*:*:*:*:*:*
https://www.postgresql.org/about/news/postgresql-133-127-1112-1017-and-9622-released-2210/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Memory leak
EUVDB-ID: #VU53232
Risk: Medium
CVSSv4.0: 5.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-32028
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote user to gain access to sensitive information.
The vulnerability exists due memory leak within the INSERT ... ON CONFLICT ... DO UPDATE command implementation. A remote authenticated database user can execute the affected command to read arbitrary bytes of server memory. In the default
configuration, any authenticated database user can create prerequisite objects
and complete this attack at will.
Install updates from vendor's website.
Vulnerable software versionsPostgreSQL: 9.6.0 - 13.2
CPE2.3https://www.postgresql.org/about/news/postgresql-133-127-1112-1017-and-9622-released-2210/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Memory leak
EUVDB-ID: #VU53233
Risk: Medium
CVSSv4.0: 5.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-32029
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote user to gain access to sensitive information.
The vulnerability exists due memory leak when processing UPDATE ... RETURNING command on a purpose-crafted partitioned table. A remote authenticated user can run the affected command and read arbitrary bytes of server memory. In the default
configuration, any authenticated database user can create prerequisite objects
and complete this attack at will.
Install updates from vendor's website.
Vulnerable software versionsPostgreSQL: 11.0 - 13.2
CPE2.3https://www.postgresql.org/about/news/postgresql-133-127-1112-1017-and-9622-released-2210/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
