ALT-PU-2023-5598-2

Package update shim in branch c10f1

Version15.7-alt3

Published2023-09-14

Max severityHIGH

Severity:

Closed issues (4)

HIGH8.1

Уязвимость функции grub_net_recv_ip4_packets программы-загрузчика операционных систем Grub, позволяющая нарушителю выполнить произвольный код путем отправки специально сформированных IP-пакетов

Published: 2022-06-09Modified: 2025-03-19

CVSS 3.xHIGH 8.1

CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0HIGH 7.6

CVSS:2.0/AV:N/AC:H/Au:N/C:C/I:C/A:C

References

CVE-2022-28733

MEDIUM6.5

Уязвимость функции handle_image() UEFI-загрузчика shim, позволяющая нарушителю выполнить произвольный код или вызвать отказ в обслуживании

Published: 2023-09-08Modified: 2024-02-13

CVSS 3.xMEDIUM 6.5

CVSS:3.x/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

CVSS 2.0MEDIUM 6.5

CVSS:2.0/AV:L/AC:L/Au:M/C:C/I:C/A:C

References

CVE-2022-28737

HIGH8.1

Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.

Published: 2023-07-20Modified: 2024-11-21

CVSS 3.xHIGH 8.1

CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

HIGH7.8

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: 2023-07-20Modified: 2024-11-21

CVSS 3.xHIGH 7.8

CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References