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CVE-2020-15702

Publication date 4 August 2020

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.0 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
apport 20.04 LTS focal
Fixed 2.20.11-0ubuntu27.6
19.10 eoan Ignored
18.04 LTS bionic
Fixed 2.20.9-0ubuntu7.16
16.04 LTS xenial
Fixed 2.20.1-0ubuntu2.24
14.04 LTS trusty

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Severity score breakdown

Parameter Value
Base score 7.0 · High
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-4449-2
    • Apport vulnerabilities
    • 2 September 2020

Other references