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Ubuntu Security Notice USN-7015-6

Ubuntu Security Notice 7015-6 - USN-7015-5 fixed vulnerabilities in python2.7. The update introduced several minor regressions. This update fixes the problem. It was discovered that the Python email module incorrectly parsed email addresses that contain special characters. A remote attacker could possibly use this issue to bypass certain protection mechanisms. It was discovered that Python allowed excessive backtracking while parsing certain tarfile headers. A remote attacker could possibly use this issue to cause Python to consume resources, leading to a denial of service. It was discovered that the Python email module incorrectly quoted newlines for email headers. A remote attacker could possibly use this issue to perform header injection. It was discovered that the Python http.cookies module incorrectly handled parsing cookies that contained backslashes for quoted characters. A remote attacker could possibly use this issue to cause Python to consume resources, leading to a denial of service. It was discovered that the Python zipfile module incorrectly handled certain malformed zip files. A remote attacker could possibly use this issue to cause Python to stop responding, resulting in a denial of service.

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Ubuntu Security Notice USN-7015-6
November 22, 2024

python2.7 regresssions

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 22.04 LTS
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary:

USN-7015-5 caused some regressions in Python.

Software Description:

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

Details:

USN-7015-5 fixed vulnerabilities in python2.7. The update introduced
several minor regressions. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that the Python email module incorrectly parsed email
addresses that contain special characters. A remote attacker could
possibly use this issue to bypass certain protection mechanisms.
(CVE-2023-27043)

It was discovered that Python allowed excessive backtracking while parsing
certain tarfile headers. A remote attacker could possibly use this issue
to cause Python to consume resources, leading to a denial of service.
(CVE-2024-6232)

It was discovered that the Python email module incorrectly quoted newlines
for email headers. A remote attacker could possibly use this issue to
perform header injection. (CVE-2024-6923)

It was discovered that the Python http.cookies module incorrectly handled
parsing cookies that contained backslashes for quoted characters. A remote
attacker could possibly use this issue to cause Python to consume
resources, leading to a denial of service. (CVE-2024-7592)

It was discovered that the Python zipfile module incorrectly handled
certain malformed zip files. A remote attacker could possibly use this
issue to cause Python to stop responding, resulting in a denial of
service. (CVE-2024-8088)

Update instructions:

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

Ubuntu 22.04 LTS
python2.7 2.7.18-13ubuntu1.4
python2.7-minimal 2.7.18-13ubuntu1.4

Ubuntu 20.04 LTS
python2.7 2.7.18-1~20.04.6
python2.7-minimal 2.7.18-1~20.04.6

Ubuntu 18.04 LTS
python2.7 2.7.17-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
python2.7-minimal 2.7.17-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro

Ubuntu 16.04 LTS
python2.7 2.7.12-1ubuntu0~16.04.18+esm13
Available with Ubuntu Pro
python2.7-minimal 2.7.12-1ubuntu0~16.04.18+esm13
Available with Ubuntu Pro

Ubuntu 14.04 LTS
python2.7 2.7.6-8ubuntu0.6+esm22
Available with Ubuntu Pro
python2.7-minimal 2.7.6-8ubuntu0.6+esm22
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-7015-6
https://ubuntu.com/security/notices/USN-7015-5
https://ubuntu.com/security/notices/USN-7015-4
https://ubuntu.com/security/notices/USN-7015-3
https://ubuntu.com/security/notices/USN-7015-2
https://ubuntu.com/security/notices/USN-7015-1
https://launchpad.net/bugs/2089071

Package Information:
https://launchpad.net/ubuntu/+source/python2.7/2.7.18-13ubuntu1.4
https://launchpad.net/ubuntu/+source/python2.7/2.7.18-1~20.04.6

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