Amazon Linux AMI update for postgresql92, postgresql93, postgresql94

Published: 2017-12-06

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-12172 CVE-2017-15098
CWE-ID	CWE-264 CWE-19
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Amazon Linux AMI Operating systems & Components / Operating system
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper access control

EUVDB-ID: #VU9169

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-12172

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

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition or obtain potentially sensitive information on a targeted system.

The weakness exists due to a flaw in certain non-default startup scripts. A local attacker with the privileges of the database server can create a symbolic link from the $PGLOG file to a critical file and modify the target file.

Mitigation

Update the affected packages.

i686:
    postgresql92-plperl-9.2.24-1.65.amzn1.i686
    postgresql92-debuginfo-9.2.24-1.65.amzn1.i686
    postgresql92-server-compat-9.2.24-1.65.amzn1.i686
    postgresql92-plpython27-9.2.24-1.65.amzn1.i686
    postgresql92-devel-9.2.24-1.65.amzn1.i686
    postgresql92-server-9.2.24-1.65.amzn1.i686
    postgresql92-libs-9.2.24-1.65.amzn1.i686
    postgresql92-contrib-9.2.24-1.65.amzn1.i686
    postgresql92-9.2.24-1.65.amzn1.i686
    postgresql92-test-9.2.24-1.65.amzn1.i686
    postgresql92-pltcl-9.2.24-1.65.amzn1.i686
    postgresql92-plpython26-9.2.24-1.65.amzn1.i686
    postgresql92-docs-9.2.24-1.65.amzn1.i686
    postgresql94-plpython27-9.4.15-1.73.amzn1.i686
    postgresql94-debuginfo-9.4.15-1.73.amzn1.i686
    postgresql94-docs-9.4.15-1.73.amzn1.i686
    postgresql94-libs-9.4.15-1.73.amzn1.i686
    postgresql94-devel-9.4.15-1.73.amzn1.i686
    postgresql94-server-9.4.15-1.73.amzn1.i686
    postgresql94-plperl-9.4.15-1.73.amzn1.i686
    postgresql94-9.4.15-1.73.amzn1.i686
    postgresql94-test-9.4.15-1.73.amzn1.i686
    postgresql94-plpython26-9.4.15-1.73.amzn1.i686
    postgresql94-contrib-9.4.15-1.73.amzn1.i686
    postgresql93-pltcl-9.3.20-1.69.amzn1.i686
    postgresql93-test-9.3.20-1.69.amzn1.i686
    postgresql93-plpython26-9.3.20-1.69.amzn1.i686
    postgresql93-libs-9.3.20-1.69.amzn1.i686
    postgresql93-server-9.3.20-1.69.amzn1.i686
    postgresql93-docs-9.3.20-1.69.amzn1.i686
    postgresql93-contrib-9.3.20-1.69.amzn1.i686
    postgresql93-devel-9.3.20-1.69.amzn1.i686
    postgresql93-debuginfo-9.3.20-1.69.amzn1.i686
    postgresql93-plpython27-9.3.20-1.69.amzn1.i686
    postgresql93-9.3.20-1.69.amzn1.i686
    postgresql93-plperl-9.3.20-1.69.amzn1.i686

src:
    postgresql92-9.2.24-1.65.amzn1.src
    postgresql94-9.4.15-1.73.amzn1.src
    postgresql93-9.3.20-1.69.amzn1.src

x86_64:
    postgresql92-docs-9.2.24-1.65.amzn1.x86_64
    postgresql92-plpython27-9.2.24-1.65.amzn1.x86_64
    postgresql92-test-9.2.24-1.65.amzn1.x86_64
    postgresql92-9.2.24-1.65.amzn1.x86_64
    postgresql92-server-compat-9.2.24-1.65.amzn1.x86_64
    postgresql92-pltcl-9.2.24-1.65.amzn1.x86_64
    postgresql92-plperl-9.2.24-1.65.amzn1.x86_64
    postgresql92-devel-9.2.24-1.65.amzn1.x86_64
    postgresql92-server-9.2.24-1.65.amzn1.x86_64
    postgresql92-libs-9.2.24-1.65.amzn1.x86_64
    postgresql92-contrib-9.2.24-1.65.amzn1.x86_64
    postgresql92-plpython26-9.2.24-1.65.amzn1.x86_64
    postgresql92-debuginfo-9.2.24-1.65.amzn1.x86_64
    postgresql94-contrib-9.4.15-1.73.amzn1.x86_64
    postgresql94-plperl-9.4.15-1.73.amzn1.x86_64
    postgresql94-devel-9.4.15-1.73.amzn1.x86_64
    postgresql94-server-9.4.15-1.73.amzn1.x86_64
    postgresql94-libs-9.4.15-1.73.amzn1.x86_64
    postgresql94-plpython26-9.4.15-1.73.amzn1.x86_64
    postgresql94-debuginfo-9.4.15-1.73.amzn1.x86_64
    postgresql94-plpython27-9.4.15-1.73.amzn1.x86_64
    postgresql94-test-9.4.15-1.73.amzn1.x86_64
    postgresql94-9.4.15-1.73.amzn1.x86_64
    postgresql94-docs-9.4.15-1.73.amzn1.x86_64
    postgresql93-server-9.3.20-1.69.amzn1.x86_64
    postgresql93-devel-9.3.20-1.69.amzn1.x86_64
    postgresql93-test-9.3.20-1.69.amzn1.x86_64
    postgresql93-plperl-9.3.20-1.69.amzn1.x86_64
    postgresql93-plpython27-9.3.20-1.69.amzn1.x86_64
    postgresql93-docs-9.3.20-1.69.amzn1.x86_64
    postgresql93-9.3.20-1.69.amzn1.x86_64
    postgresql93-pltcl-9.3.20-1.69.amzn1.x86_64
    postgresql93-contrib-9.3.20-1.69.amzn1.x86_64
    postgresql93-plpython26-9.3.20-1.69.amzn1.x86_64
    postgresql93-libs-9.3.20-1.69.amzn1.x86_64
    postgresql93-debuginfo-9.3.20-1.69.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2017-931.html

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) Data handling

EUVDB-ID: #VU9168