[USN-6513-1] Python vulnerabilities
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Ubuntu Security Notice USN-6513-1
November 23, 2023
python2.7, python3.5, python3.6 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)
Summary:
Several security issues were fixed in Python.
Software Description:
- python2.7: 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 handled certain plist files.
If a user or an automated system were tricked into processing a specially
crafted plist file, an attacker could possibly use this issue to consume
resources, resulting in a denial of service. (CVE-2022-48564)
It was discovered that Python instances of ssl.SSLSocket were vulnerable
to a bypass of the TLS handshake. An attacker could possibly use this
issue to cause applications to treat unauthenticated received data before
TLS handshake as authenticated data after TLS handshake. (CVE-2023-40217)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS (Available with Ubuntu Pro):
python2.7 2.7.17-1~18.04ubuntu1.13+esm4
python3.6 3.6.9-1~18.04ubuntu1.13+esm1
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
python2.7 2.7.12-1ubuntu0~16.04.18+esm9
python3.5 3.5.2-2ubuntu0~16.04.13+esm12
Ubuntu 14.04 LTS (Available with Ubuntu Pro):
python2.7 2.7.6-8ubuntu0.6+esm18
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6513-1
CVE-2022-48564, CVE-2023-40217
A Python security update has been released for Ubuntu Linux 14.04 LTS, 16.04 LTS, and 18.04 LTS.
