#VU63770 Insufficient verification of data authenticity in cryptsetup
Vulnerability identifier: #VU63770
Vulnerability risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-345
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
cryptsetup
Other software /
Other software solutions
Vendor: cryptsetup
Description
The vulnerability allows a local attacker to escalate privileges on the system.
The vulnerability exists due to improper handling of the LUKS2 reencryption recover. A local attacker with physical access to the medium can send a specially crafted LUKS header and trick cryptsetup into disabling encryption during the recovery of the device.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
cryptsetup: 2.3.0 - 2.4.2
External links
http://ubuntu.com/security/notices/USN-5286-1
http://bugzilla.redhat.com/show_bug.cgi?id=2032401
Q & A
Can this vulnerability be exploited remotely?
No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
