CVE-2020-1733 vulnerability in Red Hat and Other Products

A race condition flaw was found in Ansible Engine 2.7.17 and prior, 2.8.9 and prior, 2.9.6 and prior when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in /var/tmp. This directory is created with "umask 77 && mkdir -p <dir>"; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating '/proc/<pid>/cmdline'.

Vulnerability Analysis

CVE-2020-1733 can be exploited with local system access, requires user interaction and a small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.

Attack Vector:

LOCAL

Attack Complexity:

HIGH

Privileges Required:

LOW

User Interaction:

REQUIRED

Scope:

CHANGED

Confidentiality Impact:

LOW

Integrity Impact:

LOW

Availability Impact:

LOW

Weakness Type

Insecure Temporary File

Creating and using insecure temporary files can leave application and system data vulnerable to attack.

Products Associated with CVE-2020-1733

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2020-1733 are published in these products:

Affected Versions

Exploit Probability

EPSS

0.03%

Percentile

7.90%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.