USN-4030-1: web2py vulnerabilities

21 June 2019

web2py vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in web2py.

Software Description

  • web2py - High-level Python web development framework

Details

It was discovered that web2py does not properly check denied hosts before verifying passwords. An attacker could possibly use this issue to perform brute-force attacks. (CVE-2016-10321)

It was discovered that web2py allows remote attackers to obtain environment variable values. An attacker could possibly use this issue to gain administrative access. (CVE-2016-3952)

It was discovered that web2py uses a hardcoded encryption key. An attacker could possibly use this issue to execute arbitrary code. (CVE-2016-3953, CVE-2016-3954, CVE-2016-3957)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04 LTS
python-gluon - 2.12.3-1ubuntu0.1
python-web2py - 2.12.3-1ubuntu0.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References