CVE-2019-9512

Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service

HIGH
7.5
CVSS Score
Published: August 13, 2019 at 08:50 PM UTC
Updated: June 17, 2026 at 02:43 AM UTC
5 products affected across 4 vendorsDebian LinuxNode.jsTraffic Server· also runs on 1 platform

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Severity
HIGH7.5
Exploit prediction
EPSS 83%

Description

Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.0.0 ≤ v ≤ 6.2.37.0.0 ≤ v ≤ 7.1.68.0.0 ≤ v ≤ 8.0.3
1.0.0 ≤ v ≤ 1.4.0
apple-macos (environment) · canonical-ubuntu-linux (environment)
10.0.0 ≤ v ≤ 10.12.010.13.0 ≤ v < 10.16.312.0.0 ≤ v < 12.8.18.0.0 ≤ v ≤ 8.8.18.9.0 ≤ v < 8.16.1
Affected range stops below 10.16.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 12.8.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.16.1, so it looks safe — our inference, not a vendor statement
80%
All versions

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

References (65)

Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00076.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00002.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00011.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00021.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00038.html
Mailing Listx_refsource_FULLDISCThird Party Advisory
http://seclists.org/fulldisclosure/2019/Aug/16

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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