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Related Vulnerabilities: CVE-2017-12172 CVE-2017-15098 CVE-2017-15099

Privilege escalation flaws were found in the initialization scripts of PostgreSQL. A remote attacker with access to the postgres user account could use these flaws to obtain root access on the server machine.(CVE-2017-12172) INSERT ... ON CONFLICT DO UPDATE commands in PostgreSQL disclose table contents that the invoker lacks privilege to read. These exploits affect only tables where the attacker lacks full read access but has both INSERT and UPDATE privileges. Exploits bypass row level security policies and lack of SELECT privilege.(CVE-2017-15099) Invalid json_populate_recordset or jsonb_populate_recordset function calls in PostgreSQL can crash the server or disclose a few bytes of server memory.(CVE-2017-15098)

Source

ALAS-2017-930

Amazon Linux AMI Security Advisory: ALAS-2017-930
Advisory Release Date: 2017-12-05 22:18 Pacific
Advisory Updated Date: 2017-12-06 21:35 Pacific

Severity: Medium

References: CVE-2017-12172 CVE-2017-15098 CVE-2017-15099

Issue Overview:

Privilege escalation flaws were found in the initialization scripts of PostgreSQL. A remote attacker with access to the postgres user account could use these flaws to obtain root access on the server machine.(CVE-2017-12172)

INSERT ... ON CONFLICT DO UPDATE commands in PostgreSQL disclose table contents that the invoker lacks privilege to read. These exploits affect only tables where the attacker lacks full read access but has both INSERT and UPDATE privileges. Exploits bypass row level security policies and lack of SELECT privilege.(CVE-2017-15099)

Invalid json_populate_recordset or jsonb_populate_recordset function calls in PostgreSQL can crash the server or disclose a few bytes of server memory.(CVE-2017-15098)

Affected Packages:

postgresql95, postgresql96

Issue Correction:
Run yum update postgresql95 to update your system.
Run yum update postgresql96 to update your system.

New Packages:

i686:
    postgresql95-plperl-9.5.10-1.77.amzn1.i686
    postgresql95-libs-9.5.10-1.77.amzn1.i686
    postgresql95-debuginfo-9.5.10-1.77.amzn1.i686
    postgresql95-devel-9.5.10-1.77.amzn1.i686
    postgresql95-test-9.5.10-1.77.amzn1.i686
    postgresql95-contrib-9.5.10-1.77.amzn1.i686
    postgresql95-docs-9.5.10-1.77.amzn1.i686
    postgresql95-9.5.10-1.77.amzn1.i686
    postgresql95-plpython26-9.5.10-1.77.amzn1.i686
    postgresql95-static-9.5.10-1.77.amzn1.i686
    postgresql95-server-9.5.10-1.77.amzn1.i686
    postgresql95-plpython27-9.5.10-1.77.amzn1.i686
    postgresql96-plperl-9.6.6-1.79.amzn1.i686
    postgresql96-plpython26-9.6.6-1.79.amzn1.i686
    postgresql96-plpython27-9.6.6-1.79.amzn1.i686
    postgresql96-devel-9.6.6-1.79.amzn1.i686
    postgresql96-contrib-9.6.6-1.79.amzn1.i686
    postgresql96-static-9.6.6-1.79.amzn1.i686
    postgresql96-docs-9.6.6-1.79.amzn1.i686
    postgresql96-libs-9.6.6-1.79.amzn1.i686
    postgresql96-debuginfo-9.6.6-1.79.amzn1.i686
    postgresql96-test-9.6.6-1.79.amzn1.i686
    postgresql96-9.6.6-1.79.amzn1.i686
    postgresql96-server-9.6.6-1.79.amzn1.i686

src:
    postgresql95-9.5.10-1.77.amzn1.src
    postgresql96-9.6.6-1.79.amzn1.src

x86_64:
    postgresql95-server-9.5.10-1.77.amzn1.x86_64
    postgresql95-devel-9.5.10-1.77.amzn1.x86_64
    postgresql95-contrib-9.5.10-1.77.amzn1.x86_64
    postgresql95-9.5.10-1.77.amzn1.x86_64
    postgresql95-static-9.5.10-1.77.amzn1.x86_64
    postgresql95-plpython27-9.5.10-1.77.amzn1.x86_64
    postgresql95-libs-9.5.10-1.77.amzn1.x86_64
    postgresql95-docs-9.5.10-1.77.amzn1.x86_64
    postgresql95-plpython26-9.5.10-1.77.amzn1.x86_64
    postgresql95-plperl-9.5.10-1.77.amzn1.x86_64
    postgresql95-debuginfo-9.5.10-1.77.amzn1.x86_64
    postgresql95-test-9.5.10-1.77.amzn1.x86_64
    postgresql96-static-9.6.6-1.79.amzn1.x86_64
    postgresql96-docs-9.6.6-1.79.amzn1.x86_64
    postgresql96-plperl-9.6.6-1.79.amzn1.x86_64
    postgresql96-libs-9.6.6-1.79.amzn1.x86_64
    postgresql96-test-9.6.6-1.79.amzn1.x86_64
    postgresql96-debuginfo-9.6.6-1.79.amzn1.x86_64
    postgresql96-9.6.6-1.79.amzn1.x86_64
    postgresql96-contrib-9.6.6-1.79.amzn1.x86_64
    postgresql96-server-9.6.6-1.79.amzn1.x86_64
    postgresql96-plpython26-9.6.6-1.79.amzn1.x86_64
    postgresql96-devel-9.6.6-1.79.amzn1.x86_64
    postgresql96-plpython27-9.6.6-1.79.amzn1.x86_64

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ALAS-2017-930

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