CVE-2019-19241
Linux kernel Io Uring Capability Escalation
Description
In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an unprivileged user, are sometimes performed by a kernel worker thread without considering that context.
INFO
Published Date :
Dec. 17, 2019, 8:15 p.m.
Last Modified :
Aug. 24, 2020, 5:37 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-19241.
| URL | Resource |
|---|---|
| https://bugs.chromium.org/p/project-zero/issues/detail?id=1975 | Mailing List Third Party Advisory |
| https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2 | Mailing List Vendor Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=181e448d8709e517c9c7b523fcd209f24eb38ca7 | Patch Vendor Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d69e07793f891524c6bbf1e75b9ae69db4450953 | Patch Vendor Advisory |
| https://security.netapp.com/advisory/ntap-20200103-0001/ | |
| https://usn.ubuntu.com/4284-1/ |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-19241 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-19241 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Aug. 24, 2020
Action Type Old Value New Value Changed CWE CWE-269 NVD-CWE-noinfo -
CVE Modified by [email protected]
Mar. 02, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4284-1/ [No Types Assigned] -
CVE Modified by [email protected]
Jan. 03, 2020
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20200103-0001/ [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 20, 2019
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://bugs.chromium.org/p/project-zero/issues/detail?id=1975 No Types Assigned https://bugs.chromium.org/p/project-zero/issues/detail?id=1975 Mailing List, Third Party Advisory Changed Reference Type https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2 Mailing List, Vendor Advisory Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=181e448d8709e517c9c7b523fcd209f24eb38ca7 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=181e448d8709e517c9c7b523fcd209f24eb38ca7 Patch, Vendor Advisory Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d69e07793f891524c6bbf1e75b9ae69db4450953 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d69e07793f891524c6bbf1e75b9ae69db4450953 Patch, Vendor Advisory Added CWE NIST CWE-269 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.4.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-19241 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-19241
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} 0.02%
score
0.33374
percentile