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Ubuntu Security Notice USN-3817-2

Ubuntu Security Notice USN-3817-2
Posted Nov 15, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3817-2 - USN-3817-1 fixed a vulnerability in Python. This update provides the corresponding update for Ubuntu 12.04 ESM. 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. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, python
systems | linux, ubuntu
advisories | CVE-2018-1000030, CVE-2018-1000802, CVE-2018-1061, CVE-2018-14647
MD5 | e399e890f8bd1e86e7456e03b8a0fe3d

Ubuntu Security Notice USN-3817-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3817-2
November 15, 2018

python2.7 vulnerabilities
==========================================================================

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,
CVE-2018-14647
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