CVE-2023-40661: Opensc: multiple memory issues with pkcs15-init (enrollment tool)
First published: Wed Sep 27 2023(Updated: )
Several memory issues that are security relevant that were reported since the release of OpenSC 0.23.0 and that are relevant to the handling the card enrollment process using pkcs15-init. All of these require physical access to the computer at the time user or administrator would be enrolling the cards (generating keys and loading certificates, other card/token management) operations. The attack requires crafted USB device or smart card that would present the system with specially crafted responses to the APDUs so they are considered a high-complexity and low-severity. This issue is not exploitable just by using a PKCS#11 module as done in most of the end-user deployments. <a href="https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651">https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651</a> <a href="https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories">https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories</a> <a href="https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1">https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Opensc Project Opensc | <=0.23.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux | =9.0 | |
| redhat/OpenSC | <0.24.0 | 0.24.0 |
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Reference Links
- https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651
- https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories
- https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=60769
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=60527
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=60672
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=60650
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=60616
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58932
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=56213
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=55998
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=55851
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=54312
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53927
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2248099
- https://access.redhat.com/errata/RHSA-2023:7876
- https://access.redhat.com/errata/RHSA-2023:7879
- https://bugzilla.redhat.com/show_bug.cgi?id=2240913
- https://access.redhat.com/security/cve/CVE-2023-40661
Frequently Asked Questions
What is CVE-2023-40661?
CVE-2023-40661 is a vulnerability in the OpenSC packages that allows attackers to exploit memory issues in the card enrollment process using pkcs15-init.
How severe is CVE-2023-40661?
CVE-2023-40661 has a severity rating of 6.4, which is considered medium.
How can an attacker exploit CVE-2023-40661?
To exploit CVE-2023-40661, an attacker needs physical access to the computer system and must use a custom-crafted attack.
Which software is affected by CVE-2023-40661?
The OpenSC packages versions up to 0.24.0, Opensc Project Opensc versions up to 0.23.0, Redhat Enterprise Linux versions 8.0 and 9.0 are affected by CVE-2023-40661.
How can I fix CVE-2023-40661?
To fix CVE-2023-40661, update the affected software to version 0.24.0 or later.
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