All errata/sisyphus/ALT-PU-2024-1671-3
ALT-PU-2024-1671-3

Package update shim in branch sisyphus

Version15.8-alt1
Task#339548
Published2026-02-04
Max severityHIGH
Severity:

Closed issues (12)

BDU:2024-00725
HIGH8.3

Уязвимость UEFI-загрузчика shim, существующая из-за непринятия мер по нейтрализации специальных элементов, позволяющая нарушителю выполнить произвольный код

Published: 2024-01-29Modified: 2025-03-19
CVSS 3.xHIGH 8.3
CVSS:3.x/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0MEDIUM 6.8
CVSS:2.0/AV:A/AC:H/Au:N/C:C/I:C/A:C
References
BDU:2024-02895
MEDIUM5.5

Уязвимость UEFI-загрузчика shim, связанная с разыменованием NULL-указателя, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2024-04-15Modified: 2024-04-26
CVSS 3.xMEDIUM 5.5
CVSS:3.x/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0MEDIUM 4.6
CVSS:2.0/AV:L/AC:L/Au:S/C:N/I:N/A:C
References
BDU:2024-02896
HIGH7.4

Уязвимость UEFI-загрузчика shim, связанная с целочисленным переполнением или обход, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Published: 2024-04-15Modified: 2024-04-26
CVSS 3.xHIGH 7.4
CVSS:3.x/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0MEDIUM 6.2
CVSS:2.0/AV:L/AC:H/Au:N/C:C/I:C/A:C
References
BDU:2024-02897
MEDIUM5.5

Уязвимость UEFI-загрузчика shim, связанная с чтением за пределами поля, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2024-04-15Modified: 2024-04-26
CVSS 3.xMEDIUM 5.5
CVSS:3.x/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0MEDIUM 4.6
CVSS:2.0/AV:L/AC:L/Au:S/C:N/I:N/A:C
References
BDU:2024-02898
MEDIUM5.5

Уязвимость UEFI-загрузчика shim, связанная с чтением за пределами поля, позволяющая нарушителю раскрыть защищаемую информацию

Published: 2024-04-15Modified: 2026-04-09
CVSS 3.xMEDIUM 5.5
CVSS:3.x/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0MEDIUM 4.6
CVSS:2.0/AV:L/AC:L/Au:S/C:C/I:N/A:N
References
BDU:2024-02899
MEDIUM5.1

Уязвимость UEFI-загрузчика shim, связанная с чтением за пределами поля, позволяющая нарушителю вызвать отказ в обслуживании или раскрыть защищаемую информацию

Published: 2024-04-15Modified: 2024-04-26
CVSS 3.xMEDIUM 5.1
CVSS:3.x/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H
CVSS 2.0MEDIUM 5.0
CVSS:2.0/AV:L/AC:L/Au:M/C:P/I:N/A:C
References
CVE-2023-40546
MEDIUM5.5

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: 2024-01-29Modified: 2024-11-21
CVSS 3.xMEDIUM 5.5
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
CVE-2023-40547
HIGH8.3

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: 2024-01-25Modified: 2024-11-21
CVSS 3.xHIGH 8.3
CVSS:3.x/CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
References
CVE-2023-40548
HIGH7.4

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: 2024-01-29Modified: 2024-11-21
CVSS 3.xHIGH 7.4
CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
CVE-2023-40549
MEDIUM5.5

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: 2024-01-29Modified: 2024-11-21
CVSS 3.xMEDIUM 5.5
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
CVE-2023-40550
MEDIUM5.5

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: 2024-01-29Modified: 2024-11-21
CVSS 3.xMEDIUM 5.5
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
CVE-2023-40551
MEDIUM5.1

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: 2024-01-29Modified: 2024-11-21
CVSS 3.xMEDIUM 5.1
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H
References