Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2020-15702

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
06/08/2020
Last modified:
03/11/2025

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.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.00 HIGH
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.00
Severity 3.x
HIGH
Vector 2.0
AV:L/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.40 MEDIUM
Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P

Attack Vector (AV): Local
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
4.40
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu8:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu9:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu10:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu11:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu12:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu13:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu14:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu15:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu16:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu17:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu18:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu19:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu20:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu21:*:*:*:*:*:*:*
cpe:2.3:a:canonical:apport:2.20.11-0ubuntu22:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools