CVE-2021-3623
First published: Mon Jun 28 2021(Updated: )
A flaw was found in libtpms. The flaw can be triggered by specially-crafted TPM 2 command packets containing illegal values and may lead to an out-of-bounds access when the volatile state of the TPM 2 is marshalled/written or unmarshalled/read. The highest threat from this vulnerability is to system availability.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libtpms Project Libtpms | <0.6.5 | |
| Libtpms Project Libtpms | >=0.7.0<0.7.8 | |
| Libtpms Project Libtpms | >=0.8.0<0.8.4 | |
| Redhat Enterprise Linux | =8.0 | |
| Fedoraproject Fedora | =34 | |
| redhat/libtpms | <0.6.5 | 0.6.5 |
| redhat/libtpms | <0.7.8 | 0.7.8 |
| redhat/libtpms | <0.8.4 | 0.8.4 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1976806
- https://github.com/stefanberger/libtpms/commit/2e6173c
- https://github.com/stefanberger/libtpms/commit/2f30d62
- https://github.com/stefanberger/libtpms/commit/7981d9a
- https://github.com/stefanberger/libtpms/pull/223
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z7KZSYMTE7Z4BBEZUWO2DIMQDWMGEP46/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1976811
Frequently Asked Questions
What is the vulnerability ID for this flaw?
The vulnerability ID is CVE-2021-3623.
What is the severity of CVE-2021-3623?
The severity of CVE-2021-3623 is medium (6.1).
How can the flaw in libtpms be triggered?
The flaw in libtpms can be triggered by specially-crafted TPM 2 command packets containing illegal values.
What is the highest threat from this vulnerability?
The highest threat from this vulnerability is to system integrity.
Where can I find more information about CVE-2021-3623?
You can find more information about CVE-2021-3623 on the Red Hat Bugzilla page: https://bugzilla.redhat.com/show_bug.cgi?id=1976806 and on the GitHub commits: https://github.com/stefanberger/libtpms/commit/2e6173c and https://github.com/stefanberger/libtpms/commit/2f30d62.
- collector/nvd-index
- collector/redhat-bugzilla
- alias/CVE-2021-3623
- vendor/libtpms project
- canonical/libtpms project libtpms
- version/libtpms project libtpms/0.7.0
- version/libtpms project libtpms/0.8.0
- vendor/redhat
- canonical/redhat enterprise linux
- version/redhat enterprise linux/8.0
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/34
- package-manager/redhat