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============================================================
Ubuntu Security Notice USN-4030-1
June 21, 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
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4030-1
CVE-2016-10321, CVE-2016-3952, CVE-2016-3953, CVE-2016-3954,
CVE-2016-3957
Package Information:
https://launchpad.net/ubuntu/+
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