CVE-2020-14309
Grub2 Heap Buffer Overflow when Handling Squashfs Filesystem with Symbolic Link
Description
There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data.
INFO
Published Date :
July 30, 2020, 1:15 p.m.
Last Modified :
April 28, 2022, 6:58 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
0.8
Public PoC/Exploit Available at Github
CVE-2020-14309 has a 24 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-2020-14309.
| URL | Resource |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html | Mailing List Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html | Mailing List Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1852022 | Issue Tracking Third Party Advisory |
| https://security.gentoo.org/glsa/202104-05 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20200731-0008/ | Third Party Advisory |
| https://usn.ubuntu.com/4432-1/ | 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).
shim-review but not forked to be able to use LFS
Dockerfile Shell
None
Dockerfile
None
Dockerfile Makefile
None
Dockerfile
None
None
Dockerfile Shell
None
Dockerfile
Repository for all information needed for shim-review
Dockerfile
shim-review for Navix
Dockerfile
None
None
Dockerfile Makefile
None
Dockerfile
None
Dockerfile
None
None
PowerShell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-14309 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-14309 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 -
Modified Analysis by [email protected]
Apr. 28, 2022
Action Type Old Value New Value Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202104-05 No Types Assigned https://security.gentoo.org/glsa/202104-05 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* -
CWE Remap by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Changed CWE CWE-190 CWE-190 CWE-787 -
CVE Modified by [email protected]
May. 01, 2021
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202104-05 [No Types Assigned] -
CVE Modified by [email protected]
Aug. 08, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html [No Types Assigned] Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 05, 2020
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:H/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1852022 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1852022 Issue Tracking, Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20200731-0008/ No Types Assigned https://security.netapp.com/advisory/ntap-20200731-0008/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4432-1/ No Types Assigned https://usn.ubuntu.com/4432-1/ Third Party Advisory Added CWE NIST CWE-190 Added CPE Configuration OR *cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* versions up to (excluding) 2.06 -
CVE Modified by [email protected]
Aug. 04, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4432-1/ [No Types Assigned] -
CVE Modified by [email protected]
Jul. 31, 2020
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20200731-0008/ [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-14309 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-2020-14309
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.16459
percentile