ALT-PU-2024-16854-3

Package update cryptsetup in branch c9f2

Version2.6.1-alt1

Published2024-12-16

Max severityHIGH

Severity:

Closed issues (3)

HIGH7.5

Уязвимость функции hdr_validate_segments() компонента lib/luks2/luks2_json_metadata.c программы шифрования диска Cryptsetup, позволяющая нарушителю получить доступ к конфиденциальным данным, нарушить их целостность, а также вызвать отказ в обслуживании

Published: 2023-03-28Modified: 2024-01-09

CVSS 3.xHIGH 7.5

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

CVSS 2.0CRITICAL 9.3

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

References

CVE-2020-14382

HIGH7.8

A vulnerability was found in upstream release cryptsetup-2.2.0 where, there's a bug in LUKS2 format validation code, that is effectively invoked on every device/image presenting itself as LUKS2 container. The bug is in segments validation code in file 'lib/luks2/luks2_json_metadata.c' in function hdr_validate_segments(struct crypt_device cd, json_object hdr_jobj) where the code does not check for possible overflow on memory allocation used for intervals array (see statement "intervals = malloc(first_backup * sizeof(intervals));"). Due to the bug, library can be tricked* to expect such allocation was successful but for far less memory then originally expected. Later it may read data FROM image crafted by an attacker and actually write such data BEYOND allocated memory.

Published: 2020-09-16Modified: 2024-11-21

CVSS 2.0MEDIUM 6.8

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P

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

MEDIUM4.3

It was found that a specially crafted LUKS header could trick cryptsetup into disabling encryption during the recovery of the device. An attacker with physical access to the medium, such as a flash disk, could use this flaw to force a user into permanently disabling the encryption layer of that medium.

Published: 2022-08-24Modified: 2024-11-21

CVSS 3.xMEDIUM 4.3

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

References

Closed bugs (1)

Неверное сообщение в /etc/rc.d/init.d/cryptdisks.functions