CVE-2021-32547: apport read_file() function could follow maliciously constructed symbolic links
First published: Tue May 25 2021(Updated: )
It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-lts package apport hooks, it could expose private data to other local users.
Credit: security@ubuntu.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ubuntu | =18.04 | |
| Ubuntu | =20.04 | |
| Ubuntu | =20.10 | |
| Ubuntu | =21.04 | |
| Ubuntu | =21.10 |
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Frequently Asked Questions
What is the severity of CVE-2021-32547?
CVE-2021-32547 is considered a medium severity vulnerability.
What can I do to mitigate CVE-2021-32547?
To mitigate CVE-2021-32547, ensure that you apply the latest security updates for Ubuntu Linux.
What versions of Ubuntu are affected by CVE-2021-32547?
CVE-2021-32547 affects Ubuntu versions 18.04, 20.04, 20.10, 21.04, and 21.10.
How does CVE-2021-32547 expose private data?
CVE-2021-32547 allows the read_file() function to follow symbolic links or open FIFOs, potentially exposing private data to local users.
Is there a permanent fix for CVE-2021-32547?
Yes, applying the patches from Ubuntu's security updates will provide a permanent fix for CVE-2021-32547.
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