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.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade cryptsetup-reencryptUpgrade cryptsetup-develUpgrade integritysetupUpgrade cryptsetupUpgrade cryptsetup-libsUpgrade veritysetup | May 4, 2022 | Sep 16, 2020 |
| Alpine Linux | — | Upgrade cryptsetup | Oct 22, 2020 | Sep 16, 2020 |
| Centos_linux | — | Upgrade cryptsetup-libs-debuginfoUpgrade integritysetup-debuginfoUpgrade cryptsetup-reencryptUpgrade cryptsetup-debugsourceUpgrade cryptsetup-debuginfoUpgrade integritysetupUpgrade veritysetupUpgrade cryptsetup-reencrypt-debuginfoUpgrade cryptsetup-libsUpgrade veritysetup-debuginfoUpgrade cryptsetupUpgrade cryptsetup-devel | Nov 5, 2020 | Sep 16, 2020 |
| Debian | — | Upgrade cryptsetup | Jul 30, 2024 | Sep 16, 2020 |
| Huawei Euleros 2_0_sp9 | — | Upgrade cryptsetupUpgrade cryptsetup-reencrypt | Nov 3, 2020 | Sep 16, 2020 |
| Oracle_linux | — | Upgrade veritysetupUpgrade cryptsetup-develUpgrade cryptsetupUpgrade cryptsetup-reencryptUpgrade cryptsetup-libsUpgrade integritysetup | Nov 13, 2020 | Sep 3, 2020 |
| Redhat Openshift | — | Upgrade redhat-coreos | Mar 12, 2021 | Sep 16, 2020 |
| Redhat_linux | — | Upgrade cryptsetup-libsUpgrade cryptsetup-develUpgrade cryptsetupUpgrade cryptsetup-libs-debuginfoUpgrade cryptsetup-reencrypt-debuginfoUpgrade veritysetupUpgrade cryptsetup-reencryptUpgrade cryptsetup-debuginfoUpgrade cryptsetup-debugsourceUpgrade veritysetup-debuginfoUpgrade integritysetupUpgrade integritysetup-debuginfo | Nov 5, 2020 | Sep 16, 2020 |
| Suse | — | Upgrade libcryptsetup12-hmac-32bitUpgrade libcryptsetup12-hmacUpgrade libcryptsetup12-32bitUpgrade libcryptsetup12Upgrade cryptsetupUpgrade cryptsetup-langUpgrade libcryptsetup-devel | Feb 4, 2022 | Sep 14, 2020 |
| Ubuntu | — | Upgrade cryptsetup | Sep 15, 2020 | Sep 14, 2020 |
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