CVE-2018-20450

CVSS V2 Medium 4.3 CVSS V3 Medium 6.5

Description

The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than CVE-2017-2897.

Overview

CVE ID
CVE-2018-20450

Assigner
cve@mitre.org

Vulnerability Status
Modified

Published Version
2018-12-25T17:29:00

Last Modified Date
2020-03-30T17:15:12

Weakness Enumerations

CWE	URL
CWE-415	http://cwe.mitre.org/data/definitions/415.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:libxls_project:libxls:1.4.0:::::::*	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
NONE

Availability Impact
PARTIAL

Base Score
4.3

Severity
MEDIUM

Exploitability Score
8.6

Impact Score
2.9

CVSS Version 3

Version
3.0

Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
REQUIRED

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
6.5

Base Severity
MEDIUM

Exploitability Score
2.8

Impact Score
3.6

References

Reference URL	Reference Tags
https://github.com/evanmiller/libxls/issues/34	Issue Tracking Exploit Third Party Advisory
https://security.gentoo.org/glsa/202003-64

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2018-20450
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20450

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 16:45:51				Added to TrackCVE
2022-12-03 15:44:54	2018-12-25T17:29Z	2018-12-25T17:29:00	CVE Published Date	updated
2022-12-03 15:44:54		2020-03-30T17:15:12	CVE Modified Date	updated
2022-12-03 15:44:54		Modified	Vulnerability Status	updated