// For flags

CVE-2020-18770

zziplib: invalid memory access at zzip_disk_entry_to_file_header in mmapped.c

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

An issue was discovered in function zzip_disk_entry_to_file_header in mmapped.c in zziplib 0.13.69, which will lead to a denial-of-service.

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.

An update for zziplib is now available for Red Hat Enterprise Linux 9.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
Poc
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2020-08-13 CVE Reserved
  • 2023-08-22 CVE Published
  • 2024-10-04 CVE Updated
  • 2024-10-04 First Exploit
  • 2025-05-29 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-400: Uncontrolled Resource Consumption
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Zziplib Project
Search vendor "Zziplib Project"
 Zziplib
Search vendor "Zziplib Project" for product "Zziplib"
 0.13.69
Search vendor "Zziplib Project" for product "Zziplib" and version "0.13.69"
-
Affected