CVE-2018-1000168
Nghttp2 ALTSVC Frame Handling Improper Input Validation Vulnerability
Description
nghttp2 version >= 1.10.0 and nghttp2 <= v1.31.0 contains an Improper Input Validation CWE-20 vulnerability in ALTSVC frame handling that can result in segmentation fault leading to denial of service. This attack appears to be exploitable via network client. This vulnerability appears to have been fixed in >= 1.31.1.
INFO
Published Date :
May 8, 2018, 3:29 p.m.
Last Modified :
June 9, 2025, 4:15 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
                                            The following products are affected by CVE-2018-1000168
                                            vulnerability.
                                            Even if cvefeed.io is aware of the exact versions of the
                                            products
                                            that
                                            are
                                            affected, the information is not represented in the table below.
                                        
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source | 
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | 
Solution
- Update affected nghttp2 packages to a fixed version.
- Update affected Node.js packages to a recommended version.
Public PoC/Exploit Available at Github
                                            CVE-2018-1000168 has a 1 public
                                            PoC/Exploit available at Github.
                                            Go to the Public Exploits tab to see the list.
                                        
References to Advisories, Solutions, and Tools
                                            Here, you will find a curated list of external links that provide in-depth
                                            information, practical solutions, and valuable tools related to
                                            CVE-2018-1000168.
                                        
CWE - Common Weakness Enumeration
            While CVE identifies
            specific instances of vulnerabilities, CWE categorizes the common flaws or
            weaknesses that can lead to vulnerabilities. CVE-2018-1000168 is
            associated with the following CWEs:
        
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
            (CAPEC)
            stores attack patterns, which are descriptions of the common attributes and
            approaches employed by adversaries to exploit the CVE-2018-1000168
            weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Results are limited to the first 15 repositories due to potential performance issues.
			The following list is the news that have been mention
			CVE-2018-1000168 vulnerability anywhere in the article.
		
                The following table lists the changes that have been made to the
                CVE-2018-1000168 vulnerability over time.
            
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
- 
                            CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0Jun. 09, 2025 Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 
- 
                            CVE Modified by af854a3a-2127-422b-91ae-364da2661108Nov. 21, 2024 Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/103952 Added Reference https://access.redhat.com/errata/RHSA-2019:0366 Added Reference https://access.redhat.com/errata/RHSA-2019:0367 Added Reference https://lists.debian.org/debian-lts-announce/2021/10/msg00011.html Added Reference https://nghttp2.org/blog/2018/04/12/nghttp2-v1-31-1/ Added Reference https://nodejs.org/en/blog/vulnerability/june-2018-security-releases/ 
- 
                            CVE Modified by [email protected]May. 14, 2024 Action Type Old Value New Value 
- 
                            Reanalysis by [email protected]Aug. 16, 2022 Action Type Old Value New Value Changed Reference Type http://www.securityfocus.com/bid/103952 Broken Link http://www.securityfocus.com/bid/103952 Broken Link, Third Party Advisory, VDB Entry Changed CPE Configuration OR *cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:* versions from (including) 8.4.0 up to (including) 8.15.1 *cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (including) 9.11.2 *cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:* versions from (including) 10.0.0 up to (including) 10.15.2 OR *cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* versions from (including) 6.0.0 up to (including) 6.8.1 *cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* versions from (including) 8.4.0 up to (including) 8.17.0 *cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (including) 9.11.2 *cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* versions from (including) 10.0.0 up to (excluding) 10.4.1 
- 
                            Modified Analysis by [email protected]Apr. 13, 2022 Action Type Old Value New Value Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://www.securityfocus.com/bid/103952 Third Party Advisory, VDB Entry http://www.securityfocus.com/bid/103952 Broken Link Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/10/msg00011.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/10/msg00011.html Mailing List, Third Party Advisory Changed Reference Type https://nodejs.org/en/blog/vulnerability/june-2018-security-releases/ Third Party Advisory https://nodejs.org/en/blog/vulnerability/june-2018-security-releases/ Release Notes, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 
- 
                            CVE Modified by [email protected]Oct. 17, 2021 Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/10/msg00011.html [No Types Assigned] 
- 
                            Modified Analysis by [email protected]Mar. 05, 2019 Action Type Old Value New Value Changed Reference Type https://access.redhat.com/errata/RHSA-2019:0367 No Types Assigned https://access.redhat.com/errata/RHSA-2019:0367 Third Party Advisory Changed Reference Type https://nodejs.org/en/blog/vulnerability/june-2018-security-releases/ No Types Assigned https://nodejs.org/en/blog/vulnerability/june-2018-security-releases/ Third Party Advisory Changed Reference Type https://access.redhat.com/errata/RHSA-2019:0366 No Types Assigned https://access.redhat.com/errata/RHSA-2019:0366 Third Party Advisory Changed Reference Type http://www.securityfocus.com/bid/103952 No Types Assigned http://www.securityfocus.com/bid/103952 Third Party Advisory, VDB Entry Added CPE Configuration OR *cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:* versions from (including) 8.4.0 up to (including) 8.15.1 *cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (including) 9.11.2 *cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:* versions from (including) 10.0.0 up to (including) 10.15.2 
- 
                            CVE Modified by [email protected]Feb. 19, 2019 Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2019:0367 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2019:0366 [No Types Assigned] 
- 
                            CVE Modified by [email protected]Oct. 31, 2018 Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/103952 [No Types Assigned] 
- 
                            CVE Modified by [email protected]Jun. 15, 2018 Action Type Old Value New Value Added Reference https://nodejs.org/en/blog/vulnerability/june-2018-security-releases/ [No Types Assigned] 
- 
                            Initial Analysis by [email protected]Jun. 12, 2018 Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://nghttp2.org/blog/2018/04/12/nghttp2-v1-31-1/ No Types Assigned https://nghttp2.org/blog/2018/04/12/nghttp2-v1-31-1/ Vendor Advisory Added CWE CWE-20 Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:a:nghttp2:nghttp2:*:*:*:*:*:*:*:* versions from (including) 1.10.0 up to (including) 1.31.0 
Vulnerability Scoring Details
Base CVSS Score: 7.5
Base CVSS Score: 5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
4.08 }} -2.63%
score
0.88046
percentile
 
                         
                         
                         
                                             
                                            