CVE-2020-27819

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in libxls before and including 1.6.1 when reading Microsoft Excel files. A NULL pointer dereference vulnerability exists when parsing XLS cells in libxls/xls2csv.c:199. It could allow a remote attacker to cause a denial of service via crafted XLS file.

Se detectó un problema en libxls versiones anteriores e incluyendo a 1.6.1 cuando se leen archivos de Microsoft Excel. Se presenta una vulnerabilidad de desreferencia del puntero NULL mientras se analizan celdas XLS en libxls/xls2csv.c:199. Podría permitir a un atacante remoto causar una denegación de servicio por medio de un archivo XLS diseñado

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-27 CVE Reserved
2021-02-23 CVE Published
2023-11-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (1)

URL	Tag	Source
https://bugzilla.redhat.com/show_bug.cgi?id=1903296	Issue Tracking

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

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"				< 1.6.2 Search vendor "Libxls Project" for product "Libxls" and version " < 1.6.2"		-		Affected