# CVE-2018-1000168: Node.js 8: NULL Pointer Dereference

CVE-2018-1000168 is fixed in 5 products on 2 platforms, first by libnghttp2-14 1.30.0-1ubuntu1, released April 12, 2018. 1 other affected product has no fix yet. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2018-1000168
- Priority: High
- CVSS: 7.5 (Medium)
- EPSS: 0.1058
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 12, 2018
- Weakness: CWE-476: NULL Pointer Dereference
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2018-1000168

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libnghttp2-14 Ubuntu 18.04.6 LTS (bionic) | 1.30.0-1ubuntu1 | [libnghttp2-14 1.30.0-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libnghttp2-14-1.30.0-1ubuntu1.md) | Apr 12, 2018 |
| Linux | nghttp2 Ubuntu 18.04.6 LTS (bionic) | 1.30.0-1ubuntu1 | [nghttp2 1.30.0-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-nghttp2-1.30.0-1ubuntu1.md) | Apr 12, 2018 |
| Linux | nghttp2-client Ubuntu 18.04.6 LTS (bionic) | 1.30.0-1ubuntu1 | [nghttp2-client 1.30.0-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-nghttp2-client-1.30.0-1ubuntu1.md) | Apr 12, 2018 |
| Linux | nghttp2-proxy Ubuntu 18.04.6 LTS (bionic) | 1.30.0-1ubuntu1 | [nghttp2-proxy 1.30.0-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-nghttp2-proxy-1.30.0-1ubuntu1.md) | Apr 12, 2018 |
| Linux | nghttp2-server Ubuntu 18.04.6 LTS (bionic) | 1.30.0-1ubuntu1 | [nghttp2-server 1.30.0-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-nghttp2-server-1.30.0-1ubuntu1.md) | Apr 12, 2018 |

## No fix yet

| Platform | Product | Status |
|---|---|---|
| Windows apps | Node.js 8 | no-fix |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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