CVE-2021-20204: Use After Free
First published: Mon May 03 2021(Updated: )
A heap memory corruption problem (use after free) can be triggered in libgetdata v0.10.0 when processing maliciously crafted dirfile databases. This degrades the confidentiality, integrity and availability of third-party software that uses libgetdata as a library. This vulnerability may lead to arbitrary code execution or privilege escalation depending on input/skills of attacker.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| getdata | =0.10.0 | |
| Debian | =9.0 | |
| Fedora | =33 | |
| Fedora | =34 | |
| Fedora | =35 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1917635
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1956350
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1956348#c3
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1956348#c10
- https://bugzilla.redhat.com/show_bug.cgi?id=1956348
- https://lists.debian.org/debian-lts-announce/2021/05/msg00015.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/43JTGEMYMCTHD3LHFD7ENBNSWCNBCYEY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GB7T7DW7XRPJOUE25ZE7GF244FPCHBWY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OE23HBLIVKVPOQ5MVADWPOCFMREVF4QZ/
Frequently Asked Questions
What is the severity of CVE-2021-20204?
CVE-2021-20204 is classified with high severity due to its potential to cause heap memory corruption and lead to remote code execution.
How do I fix CVE-2021-20204?
To fix CVE-2021-20204, update libgetdata to version 0.10.1 or later that addresses the vulnerability.
What software is affected by CVE-2021-20204?
CVE-2021-20204 affects libgetdata version 0.10.0 and certain versions of Debian and Fedora Linux.
What are the potential consequences of CVE-2021-20204?
The consequences of CVE-2021-20204 include a significant degradation in confidentiality, integrity, and availability of applications using libgetdata.
Is there a known exploit for CVE-2021-20204?
As of now, specific details about an exploit for CVE-2021-20204 have not been publicly disclosed.
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- version/fedora/33
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