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CVE-2020-15702

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CVE-2020-15702

Published: Aug 6, 2020

Modified: Nov 3, 2025

PUBLISHED

CVSS v3.1

7.0

HIGH

Description

TOCTOU Race Condition vulnerability in apport allows a local attacker to escalate privileges and execute arbitrary code. An attacker may exit the crashed process and exploit PID recycling to spawn a root process with the same PID as the crashed process, which can then be used to escalate privileges. Fixed in 2.20.1-0ubuntu2.24, 2.20.9 versions prior to 2.20.9-0ubuntu7.16 and 2.20.11 versions prior to 2.20.11-0ubuntu27.6. Was ZDI-CAN-11234.

VendorProductVersions

Canonical

apport

affected
2.20.1 - < 2.20.1-0ubuntu2.24
affected
2.20.9 - < 2.20.9-0ubuntu7.16
affected
2.20.11 - < 2.20.11-0ubuntu27.6

Weaknesses (CWE)

CWE-367

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

USN-4449-1
vendor-advisory
x_refsource_UBUNTU
USN-4449-2
vendor-advisory
x_refsource_UBUNTU

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