CVE-2018-16844

HIGHScheduled

Published:Nov 7, 2018(7 years ago)

Modified:Nov 21, 2024

Remote ExploitNo Auth RequiredNo InteractionLow Complexity

Vulnerability Description

nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive CPU usage. This issue affects nginx compiled with the ngx_http_v2_module (not compiled by default) if the 'http2' option of the 'listen' directive is used in a configuration file.

Attack Characteristics

Network AccessLow ComplexityNo Auth NeededNo User Interaction

🤖

AI analysis not yet available

Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.

No Fix Known

No patch has been released yet. Apply workarounds or mitigations where available.

Affected Software

Vendor	Product	Versions	Fixed In
f5	nginx	1.9.5 - 1.14.1	-
f5	nginx	1.15.0 - 1.15.6	-
debian	debian_linux	-

Timeline

Published
CVE disclosed publicly
Nov 7, 20187 years ago
Last Modified
Most recent update
Nov 21, 20241 year ago
Indexed to CVEInsight
Added to this platform
Mar 29, 20261 month ago

References

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035....Third Party Advisory
http://mailman.nginx.org/pipermail/nginx-announce/2018/000220.htmlMailing List
http://seclists.org/fulldisclosure/2021/Sep/36Mailing List

CVSS Score

v3.1

7.5/ 10.0

HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

At a Glance

Affected Products

References

f5 / nginx +7 more

http://www.securityfocus.com/bid/105868Third Party Advisory

http://www.securitytracker.com/id/1042038Third Party Advisory

https://access.redhat.com/errata/RHSA-2018:3680Third Party Advisory

https://access.redhat.com/errata/RHSA-2018:3681Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16844Issue Tracking

https://support.apple.com/kb/HT212818Third Party Advisory

https://usn.ubuntu.com/3812-1/Third Party Advisory

https://www.debian.org/security/2018/dsa-4335Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035....Third Party Advisory

http://mailman.nginx.org/pipermail/nginx-announce/2018/000220.htmlMailing List

http://seclists.org/fulldisclosure/2021/Sep/36Mailing List

http://www.securityfocus.com/bid/105868Third Party Advisory

http://www.securitytracker.com/id/1042038Third Party Advisory

https://access.redhat.com/errata/RHSA-2018:3680Third Party Advisory

https://access.redhat.com/errata/RHSA-2018:3681Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16844Issue Tracking

https://support.apple.com/kb/HT212818Third Party Advisory

https://usn.ubuntu.com/3812-1/Third Party Advisory

https://www.debian.org/security/2018/dsa-4335Third Party Advisory

CVSS v3 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Impact

ScopeUnchanged

ConfidentialityNone

IntegrityNone

AvailabilityHigh

Impact Analysis

ConfidentialityNone

NoneLowHigh

IntegrityNone

NoneLowHigh

AvailabilityHigh

NoneLowHigh

CVE-2018-16844

✦ Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

Vulnerability Description