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Ubuntu Security Notice USN-4030-1

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Ubuntu Security Notice USN-4030-1
June 21, 2019

web2py vulnerabilities
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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/+source/web2py/2.12.3-1ubuntu0.1
<https://launchpad.net/ubuntu/+source/web2py/2.12.3-1ubuntu0.1>

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