Bug 2241797 (CVE-2023-40549)
| Summary: | CVE-2023-40549 shim: Out-of-bounds read in verify_buffer_authenticode() malformed PE file | ||
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| Product: | [Other] Security Response | Reporter: | Marco Benatto <mbenatto> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | mlewando, security-response-team |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | shim 15.8 | Doc Type: | If docs needed, set a value |
| Doc Text: |
An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2024-04-18 07:24:05 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2259923 | ||
| Bug Blocks: | 2234588 | ||
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Description
Marco Benatto
2023-10-02 18:15:36 UTC
Created shim tracking bugs for this issue: Affects: fedora-all [bug 2259923] shim 15.8-1.el7 passed sanity testing: signatures on efi binaries are correct, booting VM, netboot / httpboot over ipv4 and ipv6 all pass Important update information: The new shim revokes ALL PREVIOUS VERSIONS of GRUB2. Therefore GRUB2 MUST be updated to the latest version: grub2-2.02-0.87.el7_9.14 (RHSA-2024:128440-02) BEFORE OR SIMULTANEOUSLY with this shim in order for Secure Boot to continue to work. Failure to update GRUB2 will result in an UNBOOTABLE system. This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Advanced Update Support Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions Red Hat Enterprise Linux 8.2 Telecommunications Update Service Via RHSA-2024:1834 https://access.redhat.com/errata/RHSA-2024:1834 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.0 Extended Update Support Via RHSA-2024:1835 https://access.redhat.com/errata/RHSA-2024:1835 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Red Hat Enterprise Linux 8.4 Telecommunications Update Service Via RHSA-2024:1873 https://access.redhat.com/errata/RHSA-2024:1873 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Extended Update Support Via RHSA-2024:1876 https://access.redhat.com/errata/RHSA-2024:1876 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Extended Update Support Via RHSA-2024:1883 https://access.redhat.com/errata/RHSA-2024:1883 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2024:1903 https://access.redhat.com/errata/RHSA-2024:1903 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2024:1902 https://access.redhat.com/errata/RHSA-2024:1902 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2024:1959 https://access.redhat.com/errata/RHSA-2024:1959 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Extended Update Support Via RHSA-2024:2086 https://access.redhat.com/errata/RHSA-2024:2086 |