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- Keyword (text search): cpe:2.3:a:redhat:shim:0.9:*:*:*:*:*:*:*
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Vuln ID | Summary | CVSS Severity |
---|---|---|
CVE-2023-40551 |
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. Published: January 29, 2024; 12:15:08 PM -0500 |
V4.0:(not available) V3.1: 5.1 MEDIUM V2.0:(not available) |
CVE-2023-40550 |
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. Published: January 29, 2024; 12:15:08 PM -0500 |
V4.0:(not available) V3.1: 5.5 MEDIUM V2.0:(not available) |
CVE-2023-40549 |
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. Published: January 29, 2024; 12:15:08 PM -0500 |
V4.0:(not available) V3.1: 5.5 MEDIUM V2.0:(not available) |
CVE-2023-40546 |
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. Published: January 29, 2024; 12:15:08 PM -0500 |
V4.0:(not available) V3.1: 5.5 MEDIUM V2.0:(not available) |
CVE-2023-40548 |
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. Published: January 29, 2024; 10:15:08 AM -0500 |
V4.0:(not available) V3.1: 7.4 HIGH V2.0:(not available) |
CVE-2023-40547 |
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. Published: January 25, 2024; 11:15:07 AM -0500 |
V4.0:(not available) V3.1: 8.3 HIGH V2.0:(not available) |
CVE-2022-28737 |
There's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into account the SizeOfRawData field from each section to be loaded. An attacker can leverage this to perform out-of-bound writes into memory. Arbitrary code execution is not discarded in such scenario. Published: July 19, 2023; 9:15:10 PM -0400 |
V4.0:(not available) V3.1: 7.8 HIGH V2.0:(not available) |