CVE-2021-3504
First published: Wed Apr 14 2021(Updated: )
A flaw was found in the hivex library in versions before 1.3.20. It is caused due to a lack of bounds check within the hivex_open function. An attacker could input a specially crafted Windows Registry (hive) file which would cause hivex to read memory beyond its normal bounds or cause the program to crash. The highest threat from this vulnerability is to system availability.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Redhat Hivex | <1.3.20 | |
| Redhat Enterprise Linux | =6.0 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| Fedoraproject Fedora | =34 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1949687
- https://lists.debian.org/debian-lts-announce/2021/05/msg00011.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A5BNKNVYFL36P2GBEB5O36LHFRYU575H/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BQXTEACRWYAZVNEOIWIYUFGG4GOXSQ22/
- https://github.com/libguestfs/hivex/commit/8f1935733b10d974a1a4176d38dd151ed98cf381
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1956204
- https://access.redhat.com/errata/RHSA-2021:2318
- https://access.redhat.com/errata/RHSA-2021:3061
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A5BNKNVYFL36P2GBEB5O36LHFRYU575H/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQXTEACRWYAZVNEOIWIYUFGG4GOXSQ22/
Frequently Asked Questions
What is CVE-2021-3504?
CVE-2021-3504 is a vulnerability in the hivex library before version 1.3.20 that allows an attacker to read memory beyond its normal bounds or cause the program to crash.
How does CVE-2021-3504 affect Redhat Enterprise Linux 7.0?
CVE-2021-3504 affects Redhat Enterprise Linux 7.0 and can be fixed by updating the hivex package to version 1.3.20 or later.
What is the severity of CVE-2021-3504?
The severity of CVE-2021-3504 is medium with a CVSS score of 5.4.
How can I fix CVE-2021-3504?
To fix CVE-2021-3504, update the hivex package to version 1.3.20 or later.
Where can I find more information about CVE-2021-3504?
You can find more information about CVE-2021-3504 in the references: [GitHub](https://github.com/libguestfs/hivex/commit/8f1935733b10d974a1a4176d38dd151ed98cf381), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1956204), [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2021:2318).
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