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6 vulnerabilities found for shim by redhat
CVE-2023-40551 (GCVE-0-2023-40551)
Vulnerability from cvelistv5
Published
2024-01-29 16:46
Modified
2025-11-20 19:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase.
References
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected: 0:15.8-3.el7 < * cpe:/o:redhat:enterprise_linux:7::server cpe:/o:redhat:enterprise_linux:7::workstation cpe:/o:redhat:enterprise_linux:7::client |
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CVE-2023-40546 (GCVE-0-2023-40546)
Vulnerability from cvelistv5
Published
2024-01-29 16:29
Modified
2025-11-20 19:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
A flaw was found in Shim when an error happened while creating a new ESL variable. If Shim fails to create the new variable, it tries to print an error message to the user; however, the number of parameters used by the logging function doesn't match the format string used by it, leading to a crash under certain circumstances.
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected: 0:15.8-3.el7 < * cpe:/o:redhat:enterprise_linux:7::client cpe:/o:redhat:enterprise_linux:7::server cpe:/o:redhat:enterprise_linux:7::workstation |
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CVE-2023-40549 (GCVE-0-2023-40549)
Vulnerability from cvelistv5
Published
2024-01-29 16:29
Modified
2025-11-20 19:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
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.
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected: 0:15.8-3.el7 < * cpe:/o:redhat:enterprise_linux:7::server cpe:/o:redhat:enterprise_linux:7::workstation cpe:/o:redhat:enterprise_linux:7::client |
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|
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CVE-2023-40550 (GCVE-0-2023-40550)
Vulnerability from cvelistv5
Published
2024-01-29 16:29
Modified
2025-11-20 19:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase.
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected: 0:15.8-3.el7 < * cpe:/o:redhat:enterprise_linux:7::server cpe:/o:redhat:enterprise_linux:7::workstation cpe:/o:redhat:enterprise_linux:7::client |
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CVE-2023-40548 (GCVE-0-2023-40548)
Vulnerability from cvelistv5
Published
2024-01-29 14:53
Modified
2025-11-20 19:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - Out-of-bounds Write
Summary
A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory allocation operations, leading to a heap-based buffer overflow. This flaw causes memory corruption and can lead to a crash or data integrity issues during the boot phase.
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected: 0:15.8-3.el7 < * cpe:/o:redhat:enterprise_linux:7::server cpe:/o:redhat:enterprise_linux:7::workstation cpe:/o:redhat:enterprise_linux:7::client |
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|
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CVE-2023-40547 (GCVE-0-2023-40547)
Vulnerability from cvelistv5
Published
2024-01-25 15:54
Modified
2025-11-20 07:24
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - Out-of-bounds Write
Summary
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.
References
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected: 0:15.8-3.el7 < * cpe:/o:redhat:enterprise_linux:7::server cpe:/o:redhat:enterprise_linux:7::workstation cpe:/o:redhat:enterprise_linux:7::client |
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