Ubuntu update for PostgreSQL



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-10208
CVE-2019-10209
CWE-ID CWE-264
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 postgresql-9.5 (Ubuntu package)
Operating systems & Components / Operating system package or component

postgresql-11 (Ubuntu package)
Operating systems & Components / Operating system package or component

postgresql-10 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU20003

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-10208

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to way PostreSQL processes SECURITY DEFINER functions. A privileged attacker with EXECUTE permission, which must itself contain a function call having inexact argument type match, can execute arbitrary SQL query under the identity of the function owner.

Mitigation

Update the affected packages.

Ubuntu 19.04
postgresql-11 - 11.5-0ubuntu0.19.04.1
Ubuntu 18.04 LTS
postgresql-10 - 10.10-0ubuntu0.18.04.1
Ubuntu 16.04 LTS
postgresql-9.5 - 9.5.19-0ubuntu0.16.04.1

Vulnerable software versions

postgresql-9.5 (Ubuntu package): 9.5.8-0ubuntu0.16.04.1 - 9.5.18-0ubuntu0.16.04.1

postgresql-11 (Ubuntu package): 11.3-0ubuntu0.19.04.1 - 11.4-0ubuntu0.19.04.1

postgresql-10 (Ubuntu package): 10.6-0ubuntu0.18.04.1 - 10.9-0ubuntu0.18.10.1

CPE2.3 External links

https://usn.ubuntu.com/4090-1/


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

2) Information disclosure

EUVDB-ID: #VU20004

Risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-10209

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

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

The vulnerability exists due to way PostgreSQL processes user-defined hash equality operators. A remote attacker can under certain circumstances read arbitrary bytes from server memory.

Note, exploitation of this vulnerability requires a superuser to create unusual operators.

Mitigation

Update the affected packages.

Ubuntu 19.04
postgresql-11 - 11.5-0ubuntu0.19.04.1
Ubuntu 18.04 LTS
postgresql-10 - 10.10-0ubuntu0.18.04.1
Ubuntu 16.04 LTS
postgresql-9.5 - 9.5.19-0ubuntu0.16.04.1

Vulnerable software versions

postgresql-9.5 (Ubuntu package): 9.5.8-0ubuntu0.16.04.1 - 9.5.18-0ubuntu0.16.04.1

postgresql-11 (Ubuntu package): 11.3-0ubuntu0.19.04.1 - 11.4-0ubuntu0.19.04.1

postgresql-10 (Ubuntu package): 10.6-0ubuntu0.18.04.1 - 10.9-0ubuntu0.18.10.1

CPE2.3 External links

https://usn.ubuntu.com/4090-1/


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.



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