CVE-2020-18770

zziplib: invalid memory access at zzip_disk_entry_to_file_header in mmapped.c

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · October 28, 2023

Updated · November 21, 2025

Description

An invalid memory access flaw was found in the mmapped.c file's zzip_disk_entry_to_file_header function in Zziplib. This issue could allow an attacker to entice a victim into opening a specially crafted file, leading to a denial of service.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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