Vulnerability CVE-2019-9518


Published: 2019-08-13

Description:
Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.

Type:

CWE-400

(Uncontrolled Resource Consumption ('Resource Exhaustion'))

Vendor: Apache
Product: Traffic server 
Version:
8.0.3
8.0.2
8.0.1
8.0.0
7.1.5
7.1.4
7.1.3
7.1.2
7.1.1
7.1.0
7.0.0
6.2.3
6.2.2
6.2.1
6.2.0
6.1.1
6.1.0
6.0.3
6.0.0
Vendor: Apple
Product: Swiftnio 
Version:
1.4.0
1.3.2
1.3.1
1.3.0
1.2.2
1.2.1
1.2.0
1.1.1
1.1.0
1.0.1
1.0.0

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.8/10
6.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete

 References:
http://seclists.org/fulldisclosure/2019/Aug/16
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md
https://kb.cert.org/vuls/id/605641/
https://lists.apache.org/thread.html/091b518265bce56a16af87b77c8cfacda902a02079e866f9fdf13b61@%3Cusers.trafficserver.apache.org%3E
https://lists.apache.org/thread.html/2653c56545573b528f3f6352a29eccaf498bd6fb2a6a59568d81a61d@%3Cannounce.trafficserver.apache.org%3E
https://lists.apache.org/thread.html/ff5b0821a6985159a832ff6d1a4bd311ac07ecc7db1e2d8bab619107@%3Cdev.trafficserver.apache.org%3E
https://seclists.org/bugtraq/2019/Aug/24
https://support.f5.com/csp/article/K46011592
https://www.synology.com/security/advisory/Synology_SA_19_33

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