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CVE-2020-14311 Detail

Description

There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  6.0 MEDIUM
Vector:  CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Nist CVSS score does not match with CNA score
CNA:  Red Hat, Inc.
Base Score:  5.7 MEDIUM
Vector:  CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink 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 
http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List  Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311 Issue Tracking  Third Party Advisory 
https://security.gentoo.org/glsa/202104-05 Third Party Advisory 
https://usn.ubuntu.com/4432-1/ Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-190 Integer Overflow or Wraparound cwe source acceptance level NIST   Contributor acceptance level Red Hat, Inc.  
CWE-122 Heap-based Buffer Overflow Contributor acceptance level Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

9 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-14311
NVD Published Date:
07/31/2020
NVD Last Modified:
11/06/2023
Source:
Red Hat, Inc.