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Ubuntu Security Notice USN-3817-2
November 15, 2018
python2.7 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 12.04 ESM
Summary:
Several security issues were fixed in Python.
Software Description:
– python2.7: An interactive high-level object-oriented language
Details:
USN-3817-1 fixed a vulnerability in Python. This update provides
the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
It was discovered that Python incorrectly handled large amounts of
data. A remote attacker could use this issue to cause Python to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2018-1000030)
It was discovered that Python incorrectly handled running external
commands in the shutil module. A remote attacker could use this issue
to cause Python to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2018-1000802)
It was discovered that Python incorrectly used regular expressions
vulnerable to catastrophic backtracking. A remote attacker could
possibly use this issue to cause a denial of service. (CVE-2018-1060,
CVE-2018-1061)
It was discovered that Python failed to initialize Expat’s hash salt.
A remote attacker could possibly use this issue to cause hash
collisions, leading to a denial of service. (CVE-2018-14647)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
python2.7 2.7.3-0ubuntu3.11
python2.7-minimal 2.7.3-0ubuntu3.11
In general, a standard system update will make all the necessary
changes.
References:
https://usn.ubuntu.com/usn/usn-3817-2
https://usn.ubuntu.com/usn/usn-3817-1
CVE-2018-1000030, CVE-2018-1000802, CVE-2018-1060, CVE-2018-1061,
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