openEuler 22.03 LTS update for libpq

1) Memory leak

EUVDB-ID: #VU59043

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3677

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote user to perform DoS attack or gain access to sensitive information.

The vulnerability exists due memory leak during parallel sort operations. A remote user can force the application to leak memory and perform denial of service attack or read arbitrary memory parts on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS

libpq-debugsource: before 11.16-1

libpq-devel: before 11.16-1

libpq-debuginfo: before 11.16-1

libpq: before 11.16-1

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1706

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Missing Encryption of Sensitive Data

EUVDB-ID: #VU58114

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23222

CWE-ID: CWE-311 - Missing Encryption of Sensitive Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to the way the libpq process in PostgreSQL handles encrypted connections. A man-in-the-middle attacker can inject false responses to the client's first few queries, despite the use of SSL certificate verification and encryption. The attacker can exfiltrate the client's password or other confidential data that might be transmitted early in a session.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS

libpq-debugsource: before 11.16-1

libpq-devel: before 11.16-1

libpq-debuginfo: before 11.16-1

libpq: before 11.16-1

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1706

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Memory leak

EUVDB-ID: #VU53232

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-32028

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The 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.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS

libpq-debugsource: before 11.16-1

libpq-devel: before 11.16-1

libpq-debuginfo: before 11.16-1

libpq: before 11.16-1

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1706

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.