Vulnerability Details : CVE-2020-15702

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.
Published 2020-08-06 23:15:12
Updated 2023-01-27 18:19:57
Source Canonical Ltd.
View at NVD,   CVE.org
Vulnerability category: Execute code

Products affected by CVE-2020-15702

Exploit prediction scoring system (EPSS) score for CVE-2020-15702

EPSS FAQ
0.07%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-15702

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.4
 MEDIUM AV:L/AC:M/Au:N/C:P/I:P/A:P
3.4
6.4
 NIST
7.0
 HIGH CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
1.0
5.9
 NIST
7.0
 HIGH CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
1.0
5.9
 Canonical Ltd.

CWE ids for CVE-2020-15702

  • The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.
    Assigned by:
    • nvd@nist.gov (Primary)
    • security@ubuntu.com (Secondary)

References for CVE-2020-15702

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