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Ubuntu: Moderate Threats from Python DoS and XSS Vulnerabilities

ubuntu
Calendar Grey October 9, 2019
Dist Ubuntu Esm H88
Keep updated regarding Ubuntu USN-4151-1 related to Python security flaws impacting several editions and their solutions.
Several security issues were fixed in Python.

Summary

Several security issues were fixed in Python.

Software Description:

- python2.7: An interactive high-level object-oriented language

- python3.7: An interactive high-level object-oriented language

- python3.6: An interactive high-level object-oriented language

- python3.5: An interactive high-level object-oriented language

Details:

It was discovered that Python incorrectly parsed certain email addresses. A

remote attacker could possibly use this issue to trick Python applications

into accepting email addresses that should be denied. (CVE-2019-16056)

It was discovered that the Python documentation XML-RPC server incorrectly

handled certain fields. A remote attacker could use this issue to execute a

cross-site scripting (XSS) attack. (CVE-2019-16935)

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.04:
  python2.7                       2.7.16-2ubuntu0.2
  python2.7-minimal               2.7.16-2ubuntu0.2
  python3.7                       3.7.3-2ubuntu0.2
  python3.7-minimal               3.7.3-2ubuntu0.2

Ubuntu 18.04 LTS:
  python2.7                       2.7.15-4ubuntu4~18.04.2
  python2.7-minimal               2.7.15-4ubuntu4~18.04.2
  python3.6                       3.6.8-1~18.04.3
  python3.6-minimal               3.6.8-1~18.04.3

Ubuntu 16.04 LTS:
  python2.7                       2.7.12-1ubuntu0~16.04.9
  python2.7-minimal               2.7.12-1ubuntu0~16.04.9
  python3.5                       3.5.2-2ubuntu0~16.04.9
  python3.5-minimal               3.5.2-2ubuntu0~16.04.9

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4151-1

CVE-2019-16056, CVE-2019-16935

October 09, 2019

Package Information

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