CVE-2018-17972
kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks
Severity Score
5.5
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.
Se descubrió un problema en la función proc_pid_stack en fs/proc/base.c en el kernel de Linux hasta la versión 4.18.11. No asegura que solo root pueda inspeccionar la pila del kernel de una tarea arbitraria, lo que permite que un atacante local explote de forma arbitraria el proceso de marcha atrás en la pila a la hora de producirse una excepción (stack unwinding) y filtre el contenido de la pila de tareas del kernel.
An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel. An attacker with a local account can trick the stack unwinder code to leak stack contents to userspace. The fix allows only root to inspect the kernel stack of an arbitrary task.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2018-10-03 CVE Reserved
- 2018-10-03 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
- CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CAPEC
References (23)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/105525 | Third Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html | Mailing List |
|
| https://support.f5.com/csp/article/K27673650?utm_source=f5support&%3Butm_medium=RSS | X_refsource_confirm |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://marc.info/?l=linux-fsdevel&m=153806242024956&w=2 | 2023-11-07 |
| URL | Date | SRC |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html | 2023-11-07 | |
| https://access.redhat.com/errata/RHSA-2019:0512 | 2023-11-07 | |
| https://access.redhat.com/errata/RHSA-2019:0514 | 2023-11-07 | |
| https://access.redhat.com/errata/RHSA-2019:0831 | 2023-11-07 | |
| https://access.redhat.com/errata/RHSA-2019:2473 | 2023-11-07 | |
| https://usn.ubuntu.com/3821-1 | 2023-11-07 | |
| https://usn.ubuntu.com/3821-2 | 2023-11-07 | |
| https://usn.ubuntu.com/3832-1 | 2023-11-07 | |
| https://usn.ubuntu.com/3835-1 | 2023-11-07 | |
| https://usn.ubuntu.com/3871-1 | 2023-11-07 | |
| https://usn.ubuntu.com/3871-3 | 2023-11-07 | |
| https://usn.ubuntu.com/3871-4 | 2023-11-07 | |
| https://usn.ubuntu.com/3871-5 | 2023-11-07 | |
| https://usn.ubuntu.com/3880-1 | 2023-11-07 | |
| https://usn.ubuntu.com/3880-2 | 2023-11-07 | |
| https://access.redhat.com/security/cve/CVE-2018-17972 | 2019-08-13 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1636349 | 2019-08-13 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | <= 4.18.11 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.18.11" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04" | esm |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server" | 7.6 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.6" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 7.6 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.6" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus" | 7.6 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.6" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus" | 7.6 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.6" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
| ||||||