8.8 - CVE-2018-20452

Executive Summary

Informations
Name	CVE-2018-20452	First vendor Publication	2018-12-25
Vendor	Cve	Last vendor Modification	2020-03-30

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Overall CVSS Score	8.8
Base Score	8.8	Environmental Score	8.8
impact SubScore	5.9	Temporal Score	8.8
Exploitabality Sub Score	2.8

Attack Vector	Network	Attack Complexity	Low
Privileges Required	None	User Interaction	Required
Scope	Unchanged	Confidentiality Impact	High
Integrity Impact	High	Availability Impact	High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Cvss Base Score	6.8	Attack Range	Network
Cvss Impact Score	6.4	Attack Complexity	Medium
Cvss Expoit Score	8.6	Authentication	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

The read_MSAT_body function in ole.c in libxls 1.4.0 has an invalid free that allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted file, because of inconsistent memory management (new versus free) in ole2_read_header in ole.c.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20452

CWE : Common Weakness Enumeration

%	Id	Name
100 %	CWE-119	Failure to Constrain Operations within the Bounds of a Memory Buffer

CPE : Common Platform Enumeration

Type	Description	Count
Application	Libxls Project Libxls cpe:2.3:a:libxls_project:libxls:1.4.0:::::::*	1

Sources (Detail)

Source	Url
GENTOO	https://security.gentoo.org/glsa/202003-64
MISC	https://github.com/evanmiller/libxls/issues/35

Alert History

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Date	Informations
2021-05-04 13:14:27	Multiple Updates
2021-04-22 02:29:29	Multiple Updates
2020-05-23 01:12:38	Multiple Updates
2019-01-12 00:19:00	Multiple Updates
2018-12-25 21:19:15	First insertion