CVE-2021-23017
nginx-mainlineVulnerabilityCVSS 7.7Patched
No public exploitation has been reported so far. A fixed version is available (see the table below).
Recommended action: Update to the fixed version listed for your distribution using the native package manager.
Severity metrics
CVSS 3.1 : 7.7 HIGH · CVSS 2.0 : 6.8 MEDIUM
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges requiredNone
User interactionNone
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactLow
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Affected & fixed versions by distribution
Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.
| Distribution | Package | Affected | Fixed version | Status |
|---|---|---|---|---|
| Arch | nginx-mainline | 1.19.10-1 | 1.21.0-1 | fixed |
| Arch | nginx | 1.20.0-1 | 1.20.1-1 | fixed |
| Debian:11 | nginx | - | 1.18.0-6.1 | fixed |
| Debian:12 | nginx | - | 1.18.0-6.1 | fixed |
| Debian:13 | nginx | - | 1.18.0-6.1 | fixed |
| Debian:14 | nginx | - | 1.18.0-6.1 | fixed |
| Debian:9 | nginx | - | 1.10.3-1+deb9u6 | fixed |
| Debian:10 | nginx | - | 1.14.2-2+deb10u4 | fixed |
| Ubuntu:Pro:14.04:LTS | nginx | - | 1.4.6-1ubuntu3.9+esm2 | fixed |
| Ubuntu:Pro:16.04:LTS | nginx | - | 1.10.3-0ubuntu0.16.04.5+esm1 | fixed |
| Ubuntu:18.04:LTS | nginx | - | 1.14.0-0ubuntu1.9 | fixed |
| Ubuntu:20.04:LTS | nginx | - | 1.18.0-0ubuntu1.2 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15-ESPOS | nginx | - | 1.16.1-3.15.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15-LTSS | nginx | - | 1.16.1-3.15.1 | fixed |
| SUSE:Linux Enterprise Server 15-LTSS | nginx | - | 1.16.1-3.15.1 | fixed |
| SUSE:Linux Enterprise Server for SAP Applications 15 | nginx | - | 1.16.1-3.15.1 | fixed |
| SUSE:Linux Enterprise Module for Server Applications 15 SP2 | nginx | - | 1.16.1-3.3.1 | fixed |
| SUSE:Linux Enterprise Module for Server Applications 15 SP3 | nginx | - | 1.19.8-3.3.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS | nginx | - | 1.16.1-6.13.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | nginx | - | 1.16.1-6.13.1 | fixed |
| SUSE:Linux Enterprise Server 15 SP1-BCL | nginx | - | 1.16.1-6.13.1 | fixed |
| SUSE:Linux Enterprise Server 15 SP1-LTSS | nginx | - | 1.16.1-6.13.1 | fixed |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP1 | nginx | - | 1.16.1-6.13.1 | fixed |
| SUSE:Manager Proxy 4.0 | nginx | - | 1.16.1-6.13.1 | fixed |
| SUSE:Manager Retail Branch Server 4.0 | nginx | - | 1.16.1-6.13.1 | fixed |
| SUSE:Manager Server 4.0 | nginx | - | 1.16.1-6.13.1 | fixed |
| SUSE:Enterprise Storage 6 | nginx | - | 1.16.1-6.13.1 | fixed |
| openSUSE:Leap 15.2 | nginx | - | 1.16.1-lp152.2.3.1 | fixed |
| openSUSE:Leap 15.3 | nginx | - | 1.19.8-3.3.1 | fixed |
| openSUSE:Tumbleweed | nginx | - | 1.21.3-1.4 | fixed |
| Red Hat:enterprise_linux:8::appstream | nginx | - | 1:1.18.0-3.module+el8.4.0+11152+f736ed63.1 | fixed |
| Red Hat:rhel_eus:8.1::appstream | nginx | - | 1:1.16.1-1.module+el8.1.0+11153+6c3a40a9.1 | fixed |
| Red Hat:rhel_eus:8.2::appstream | nginx | - | 1:1.16.1-1.module+el8.2.0+11154+636e4c3b.1 | fixed |
| Red Hat:enterprise_linux:8::appstream | nginx | - | 1:1.16.1-2.module+el8.4.0+11155+68135136.1 | fixed |
| Red Hat:enterprise_linux:8::appstream | nginx | - | 1:1.20.1-1.module+el8.5.0+13723+ab304644 | fixed |