Amazon Linux Local Check: ALAS-2015-556

Published: 2015-09-08 11:15:54
CVE Author: NIST National Vulnerability Database

Technical Details:
A double-free flaw was found in the connection handling. An unauthenticated attacker could exploit this flaw to crash the PostgreSQL back end by disconnecting at approximately the same time as the authentication time out is triggered. (CVE-2015-3165 )It was discovered that PostgreSQL did not properly check the return values of certain standard library functions. If the system is in a state that would cause the standard library functions to fail, for example memory exhaustion, an authenticated user could exploit this flaw to disclose partial memory contents or cause the GSSAPI authentication to use an incorrect keytab file. (CVE-2015-3166 )It was discovered that the pgcrypto module could return different error messages when decrypting certain data with an incorrect key. This can help an authenticated user to launch a possible cryptographic attack, although no suitable attack is currently known. (CVE-2015-3167 )

Recommendations:
Run yum update postgresql8 to update your system.

Solution Type:
Vendor Patch

CVSS Base Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Detection Type:
Linux Distribution Package

Summary:
Amazon Linux Local Security Checks

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2015-3165
https://nvd.nist.gov/vuln/detail/CVE-2015-3167
https://nvd.nist.gov/vuln/detail/CVE-2015-3166

References:

https://alas.aws.amazon.com/ALAS-2015-556.html

Severity
Medium
CVSS Score
5.0
Published
2015-09-08
Modified
2018-10-01
Category
Amazon Linux Local Security Checks

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