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Amazon Linux AMI : postgresql8 (ALAS-2012-94)
medium Nessus Plugin ID 69701
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Synopsis
The remote Amazon Linux AMI host is missing a security update.Description
A flaw was found in the way the crypt() password hashing function from the optional PostgreSQL pgcrypto contrib module performed password transformation when used with the DES algorithm. If the password string to be hashed contained the 0x80 byte value, the remainder of the string was ignored when calculating the hash, significantly reducing the password strength. This made brute-force guessing more efficient as the whole password was not required to gain access to protected resources. (CVE-2012-2143)Note: With this update, the rest of the string is properly included in the DES hash; therefore, any previously stored password values that are affected by this issue will no longer match. In such cases, it will be necessary for those stored password hashes to be updated.
A denial of service flaw was found in the way the PostgreSQL server performed a user privileges check when applying SECURITY DEFINER or SET attributes to a procedural language's (such as PL/Perl or PL/Python) call handler function. A non-superuser database owner could use this flaw to cause the PostgreSQL server to crash due to infinite recursion. (CVE-2012-2655)
Solution
Run 'yum update postgresql8' to update your system.See Also
Plugin Details
Severity: Medium
ID: 69701
File Name: ala_ALAS-2012-94.nasl
Version: 1.5
Type: local
Agent: unix
Published: 9/4/2013
Updated: 4/18/2018
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.5
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:postgresql8-devel, p-cpe:/a:amazon:linux:postgresql8-contrib, p-cpe:/a:amazon:linux:postgresql8, p-cpe:/a:amazon:linux:postgresql8-plperl, p-cpe:/a:amazon:linux:postgresql8-pltcl, p-cpe:/a:amazon:linux:postgresql8-plpython, p-cpe:/a:amazon:linux:postgresql8-server, p-cpe:/a:amazon:linux:postgresql8-test, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:postgresql8-libs, p-cpe:/a:amazon:linux:postgresql8-debuginfo, p-cpe:/a:amazon:linux:postgresql8-docs
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Patch Publication Date: 7/5/2012
Reference Information
CVE: CVE-2012-2143, CVE-2012-2655