CVE-2023-1786

Publication date 26 April 2023

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

5.5 · Medium

Score breakdown

Sensitive data could be exposed in logs of cloud-init before version 23.1.2. An attacker could use this information to find hashed passwords and possibly escalate their privilege.

From the Ubuntu Security Team

James Golovich discovered that sensitive data could be exposed in logs. An attacker could use this information to find hashed passwords and possibly escalate their privilege.

Mitigation

The Ubuntu update to address this attempted to redact information in /var/log/cloud-init.log and /run/cloud-init/instance-data.json. Additional logs may require the removal of sensitive information.

Status

Package Ubuntu Release Status
cloud-init 23.04 lunar
Fixed 23.1.2-0ubuntu0~23.04.1
22.10 kinetic
Fixed 23.1.2-0ubuntu0~22.10.1
22.04 LTS jammy
Fixed 23.1.2-0ubuntu0~22.04.1
20.04 LTS focal
Fixed 23.1.2-0ubuntu0~20.04.1
18.04 LTS bionic
Fixed 23.1.2-0ubuntu0~18.04.1
16.04 LTS xenial
14.04 LTS trusty Ignored end of standard support

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro

Severity score breakdown

Parameter Value
Base score 5.5 · Medium
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-6042-1
    • Cloud-init vulnerability
    • 26 April 2023

Other references