CVE-2020-15702
Published: 4 August 2020
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
apport Launchpad, Ubuntu, Debian |
trusty |
Released
(2.14.1-0ubuntu3.29+esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| bionic |
Released
(2.20.9-0ubuntu7.16)
|
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Released
(2.20.11-0ubuntu27.6)
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(2.20.1-0ubuntu2.24)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.0 |
| 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 |