CVE-2018-20452

Gentoo Linux Security Advisory 202003-64

Severity Score

8.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

La función read_MSAT_body en ole.c en libxls 1.4.0 tiene una liberación no válida que permite que los atacantes provoquen una denegación de servicio (cierre inesperado de la aplicación) u otro tipo de impacto sin especificar mediante un archivo manipulado. Esto se debe a la gestión inconsistente de la memoria (nueva o liberada) en ole2_read_header en ole.c.

Multiple vulnerabilities have been found in libxls, the worst of which could result in the arbitrary execution of code. Versions less than 1.5.2 are affected.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-12-25 CVE Reserved
2018-12-25 CVE Published
2024-08-05 CVE Updated
2024-08-05 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://github.com/evanmiller/libxls/issues/35	2024-08-05

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/202003-64	2020-03-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libxls Project Search vendor "Libxls Project"		Libxls Search vendor "Libxls Project" for product "Libxls"				1.4.0 Search vendor "Libxls Project" for product "Libxls" and version "1.4.0"		-		Affected