the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
Vulnerability Feeds & WidgetsNew  

Vulnerability Details : CVE-2020-25643

A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Publish Date : 2020-10-06 Last Update Date : 2020-11-03
Search Twitter   Search YouTube   Search Google

- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication ???
Gained Access None
Vulnerability Type(s) Denial Of ServiceOverflowMemory corruption

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2020:5437: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20205437 unix
RHSA-2020:5441: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20205441 unix
RHSA-2021:1578: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20211578 unix
RHSA-2021:1739: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20211739 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2020-25643

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
2 OS Linux Linux Kernel 5.9.0 RC6 * * Version Details Vulnerabilities
3 OS Linux Linux Kernel 5.9.0 RC1 * * Version Details Vulnerabilities
4 OS Linux Linux Kernel 5.9.0 RC2 * * Version Details Vulnerabilities
5 OS Linux Linux Kernel 5.9.0 RC3 * * Version Details Vulnerabilities
6 OS Linux Linux Kernel 5.9.0 RC4 * * Version Details Vulnerabilities
7 OS Linux Linux Kernel 5.9.0 RC5 * * Version Details Vulnerabilities
8 OS Linux Linux Kernel 5.9.0 - * * Version Details Vulnerabilities
9 OS Opensuse Leap 15.1 * * * Version Details Vulnerabilities
10 OS Redhat Enterprise Linux 7.0 * * * Version Details Vulnerabilities
11 OS Redhat Enterprise Linux 8.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 8
Opensuse Leap 1
Redhat Enterprise Linux 2

- References For CVE-2020-25643
SUSE openSUSE-SU-2020:1655
SUSE openSUSE-SU-2020:1698
MLIST [debian-lts-announce] 20201028 [SECURITY] [DLA 2417-1] linux-4.19 security update
MLIST [debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update
MLIST [debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update CONFIRM

- Metasploit Modules Related To CVE-2020-25643

There are not any metasploit modules related to this CVE entry (Please visit for more information)

CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.