CVE-2023-40547: Shim: rce in http boot support may lead to secure boot bypass
Red Hat · Red Hat Enterprise Linux 7
Vendor fix available · Affected: Red Hat Enterprise Linux 7 · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 92% of scored CVEs
DescriptionCVE.org
A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise. This flaw is only exploitable during the early boot phase, an attacker needs to perform a Man-in-the-Middle or compromise the boot server to be able to exploit this vulnerability successfully.
Affected products17
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Red Hat · Red Hat Enterprise Linux 7Versions not stated
- Red Hat · Red Hat Enterprise Linux 7Versions not stated
- Red Hat · Red Hat Enterprise Linux 8Versions not stated
- Red Hat · Red Hat Enterprise Linux 8.2 Advanced Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.6 Extended Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.8 Extended Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.8 Extended Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 9Versions not stated
- Red Hat · Red Hat Enterprise Linux 9.0 Extended Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 9.0 Extended Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 9.0 Extended Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 9.2 Extended Update SupportVersions not stated
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Possible (1 to 10%). EPSS between 1% and 10%.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Red Hat
- Published
- January 2024
CoverageNo articles yet
No CyberSIXT article names CVE-2023-40547 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-787cwe.mitre.org
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- access.redhat.com/security/cve/CVE-2023-40547access.redhat.com
- Issue trackerbugzilla.redhat.com
- openwall.com/lists/oss-security/2024/01/26/1openwall.com
1 more reference is in the CVE record.