CVE-2020-25578
FreeBSD SMBFS/autofs/mqueuefs/TemporaryFS uninitialized stack info leak
Description
In FreeBSD 12.2-STABLE before r368969, 11.4-STABLE before r369047, 12.2-RELEASE before p3, 12.1-RELEASE before p13 and 11.4-RELEASE before p7 several file systems were not properly initializing the d_off field of the dirent structures returned by VOP_READDIR. In particular, tmpfs(5), smbfs(5), autofs(5) and mqueuefs(5) were failing to do so. As a result, eight uninitialized kernel stack bytes may be leaked to userspace by these file systems.
INFO
Published Date :
March 26, 2021, 9:15 p.m.
Last Modified :
June 28, 2022, 2:11 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2020-25578 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2020-25578.
| URL | Resource |
|---|---|
| https://security.FreeBSD.org/advisories/FreeBSD-SA-21:01.fsdisclosure.asc | Vendor Advisory |
| https://security.netapp.com/advisory/ntap-20210423-0002/ | Third Party Advisory |
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).
CVE-2020-25578 and CVE-2020-25579: Some FreeBSD info leak bugs I found in 2020.
C
None
Python Dockerfile C
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-25578 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-25578 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]
Jun. 28, 2022
Action Type Old Value New Value Changed CWE CWE-200 CWE-665 -
Modified Analysis by [email protected]
Jun. 03, 2021
Action Type Old Value New Value Changed Reference Type https://security.netapp.com/advisory/ntap-20210423-0002/ No Types Assigned https://security.netapp.com/advisory/ntap-20210423-0002/ Third Party Advisory -
CVE Modified by [email protected]
Apr. 23, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210423-0002/ [No Types Assigned] -
Initial Analysis by [email protected]
Apr. 02, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Changed Reference Type https://security.FreeBSD.org/advisories/FreeBSD-SA-21:01.fsdisclosure.asc No Types Assigned https://security.FreeBSD.org/advisories/FreeBSD-SA-21:01.fsdisclosure.asc Vendor Advisory Added CWE NIST CWE-200 Added CPE Configuration OR *cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:11.4:p3:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:11.4:p4:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:11.4:p5:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:11.4:p6:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:-:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:p1:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:p10:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:p11:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:p12:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:p2:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:p3:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:p4:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:p5:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:p6:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:p7:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:p8:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.1:p9:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-25578 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-2020-25578
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.09 }} 0.01%
score
0.37884
percentile