CVE-2020-17469

Published: Dic 11, 2020 Last Modified: Nov 21, 2024 EU-VD ID: EUVD-2020-9421 Aliases: GSD-2020-17469
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
MEDIUM 5,0
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: none
Confidentiality: none
Integrity: none
Availability: partial

Description

AI Translation Available

An issue was discovered in FNET through 4.6.4. The code for IPv6 fragment reassembly tries to access a previous fragment starting from a network incoming fragment that still doesn't have a reference to the previous one (which supposedly resides in the reassembly list). When faced with an incoming fragment that belongs to a non-empty fragment list, IPv6 reassembly must check that there are no empty holes between the fragments: this leads to an uninitialized pointer dereference in _fnet_ip6_reassembly in fnet_ip6.c, and causes Denial-of-Service.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0069
Percentile
0,7th
Updated

EPSS Score Trend (Last 90 Days)

824

Access of Uninitialized Pointer

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Availability Integrity
Potential Impacts:
Read Memory Dos: Crash, Exit, Or Restart Execute Unauthorized Code Or Commands
Applicable Platforms
Languages: C, C++, Memory-Unsafe
View CWE Details
Application

Fnet by Butok

Product Information
Vendor Butok
Product Fnet
Version Range Affected
To 4.6.4 (inclusive)
cpe:2.3:a:butok:fnet:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
http://fnet.sourceforge.net/manual/fnet_history.html
Release Notes Third Party Advisory
http://fnet.sourceforge.net/manual/fnet_history.html
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
Third Party Advisory US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
https://www.kb.cert.org/vuls/id/815128
Third Party Advisory US Government Resource
https://www.kb.cert.org/vuls/id/815128
http://fnet.sourceforge.net/manual/fnet_history.html
Release Notes Third Party Advisory
http://fnet.sourceforge.net/manual/fnet_history.html
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
Third Party Advisory US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
https://www.kb.cert.org/vuls/id/815128
Third Party Advisory US Government Resource
https://www.kb.cert.org/vuls/id/815128