PT-2021-11419 · Microsoft+1 · Office Excel+1

Published 2021-02-23 · Updated 2021-05-30 · CVE-2020-27819

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: libxls versions prior to 1.6.2

Description: An issue exists when reading Microsoft Excel files, specifically a NULL pointer dereference vulnerability when parsing XLS cells in libxls/xls2csv.c:199. This could allow a remote attacker to cause a denial of service via a crafted XLS file.

Recommendations: For versions prior to 1.6.2, update to version 1.6.2 or later to resolve the issue. As a temporary workaround, consider restricting the use of libxls when parsing XLS files from untrusted sources until a patch is applied.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2020-27819

OPENSUSE-SU-2021:0812-1

OPENSUSE-SU-2021_0812-1

OPENSUSE-SU-2024:11015-1

Affected Products

Office Excel

Suse

References · 13

• https://osv.dev/vulnerability/openSUSE-SU-2021:0812-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-27819 · Security Note
• https://osv.dev/vulnerability/CVE-2020-27819 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-27819 · Security Note
• https://ubuntu.com/security/CVE-2020-27819 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-27819 · Vendor Advisory
• https://github.com/libxls/libxls/issues/84 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=1903296 · Note
• https://t.me/cvenotify/10332 · Telegram Post
• https://suse.com/security/cve/CVE-2020-27819 · Note
• https://t.me/cibsecurity/23972 · Telegram Post
• https://lists.opensuse.org/archives/list/[e-mail]/thread/G6PICHOKDDWFUM2A34VZUNW6XR4NUUPC · Note
• https://bugzilla.suse.com/1179532 · Note