NULL pointer dereference in libxls - CVE-2020-27819

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Main Vulnerability Database Vulnerabilities #VU50921

NULL pointer dereference in libxls - CVE-2020-27819

Published: February 24, 2021


Vulnerability identifier: #VU50921
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-27819
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
libxls
Software vendor:
libxls.sourceforge.net

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the libxls/xls2csv.c file in libxls when parsing XLS cells. A remote attacker can trigger denial of service conditions via crafted XLS file.


Remediation

Install update from vendor's website.

External links