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AUSCERT External Security Bulletin Redistribution
ESB-2019.2246
USN-4030-1: web2py vulnerabilities
24 June 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: web2py
Publisher: Ubuntu
Operating System: Ubuntu
Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-10321 CVE-2016-3957 CVE-2016-3954
CVE-2016-3953 CVE-2016-3952
Original Bulletin:
https://usn.ubuntu.com/4030-1/
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running web2py check for an updated version of the software for
their operating system.
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USN-4030-1: web2py vulnerabilities
21 June 2019
web2py vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 16.04 LTS
Summary
Several security issues were fixed in web2py.
Software Description
o 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
o CVE-2016-10321
o CVE-2016-3952
o CVE-2016-3953
o CVE-2016-3954
o CVE-2016-3957
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