- Vulnerability/
- USN-4973-1
USN-4973-1: Python vulnerability
First published: Tue Jun 01 2021(Updated: )
It was discovered that the Python stdlib ipaddress API incorrectly handled octal strings. A remote attacker could possibly use this issue to perform a wide variety of attacks, including bypassing certain access restrictions.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/python3.8-minimal | <3.8.6-1ubuntu0.3 | 3.8.6-1ubuntu0.3 |
| Ubuntu | =20.10 | |
| All of | ||
| ubuntu/python3.8 | <3.8.6-1ubuntu0.3 | 3.8.6-1ubuntu0.3 |
| Ubuntu | =20.10 | |
| All of | ||
| ubuntu/python3.8-minimal | <3.8.5-1~20.04.3 | 3.8.5-1~20.04.3 |
| Ubuntu | =20.04 | |
| All of | ||
| ubuntu/python3.8 | <3.8.5-1~20.04.3 | 3.8.5-1~20.04.3 |
| Ubuntu | =20.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2021-29921
- https://ubuntu.com/security/notices/USN-4973-2
- https://ubuntu.com/security/notices/USN-6891-1
- https://launchpad.net/ubuntu/+source/python3.8/3.8.6-1ubuntu0.3
- https://launchpad.net/ubuntu/+source/python3.8/3.8.5-1~20.04.3
- https://ubuntu.com/security/notices/USN-4973-1 (Advisory)
Frequently Asked Questions
What is the severity of USN-4973-1?
USN-4973-1 has a high severity rating due to potential remote code execution risks.
How do I fix USN-4973-1?
To fix USN-4973-1, upgrade to the patched version of Python 3.8 specified in the advisory.
Which versions of Ubuntu are affected by USN-4973-1?
USN-4973-1 affects Ubuntu versions 20.04 and 20.10 with specific Python 3.8 packages.
What impact can USN-4973-1 have on my system?
USN-4973-1 can allow attackers to bypass access restrictions, potentially leading to unauthorized actions.
Is there a workaround for USN-4973-1 while waiting for a fix?
Currently, the best approach is to upgrade to the fixed version since there is no recommended workaround.
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