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Vulnerability Details : CVE-2019-9515

Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.
Publish Date : 2019-08-13 Last Update Date : 2019-08-23
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- CVSS Scores & Vulnerability Types

CVSS Score
7.8
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 400

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2019:2925: nodejs:10 security update (Important) oval:com.redhat.rhsa:def:20192925 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-9515

# Product Type Vendor Product Version Update Edition Language
1 Application Apache Traffic Server 6.0.0 Version Details Vulnerabilities
2 Application Apache Traffic Server 6.0.3 Version Details Vulnerabilities
3 Application Apache Traffic Server 6.1.0 Version Details Vulnerabilities
4 Application Apache Traffic Server 6.1.1 Version Details Vulnerabilities
5 Application Apache Traffic Server 6.2.0 Version Details Vulnerabilities
6 Application Apache Traffic Server 6.2.1 Version Details Vulnerabilities
7 Application Apache Traffic Server 6.2.1 RC0 Version Details Vulnerabilities
8 Application Apache Traffic Server 6.2.2 Version Details Vulnerabilities
9 Application Apache Traffic Server 6.2.2 RC0 Version Details Vulnerabilities
10 Application Apache Traffic Server 6.2.3 Version Details Vulnerabilities
11 Application Apache Traffic Server 7.0.0 RC0 Version Details Vulnerabilities
12 Application Apache Traffic Server 7.0.0 RC1 Version Details Vulnerabilities
13 Application Apache Traffic Server 7.0.0 RC2 Version Details Vulnerabilities
14 Application Apache Traffic Server 7.0.0 Version Details Vulnerabilities
15 Application Apache Traffic Server 7.1.0 RC1 Version Details Vulnerabilities
16 Application Apache Traffic Server 7.1.0 Version Details Vulnerabilities
17 Application Apache Traffic Server 7.1.0 RC0 Version Details Vulnerabilities
18 Application Apache Traffic Server 7.1.1 Version Details Vulnerabilities
19 Application Apache Traffic Server 7.1.1 RC0 Version Details Vulnerabilities
20 Application Apache Traffic Server 7.1.1 RC1 Version Details Vulnerabilities
21 Application Apache Traffic Server 7.1.2 RC1 Version Details Vulnerabilities
22 Application Apache Traffic Server 7.1.2 RC2 Version Details Vulnerabilities
23 Application Apache Traffic Server 7.1.2 RC3 Version Details Vulnerabilities
24 Application Apache Traffic Server 7.1.2 RC4 Version Details Vulnerabilities
25 Application Apache Traffic Server 7.1.2 Version Details Vulnerabilities
26 Application Apache Traffic Server 7.1.2 RC0 Version Details Vulnerabilities
27 Application Apache Traffic Server 7.1.3 RC0 Version Details Vulnerabilities
28 Application Apache Traffic Server 7.1.3 Version Details Vulnerabilities
29 Application Apache Traffic Server 7.1.4 Version Details Vulnerabilities
30 Application Apache Traffic Server 7.1.4 RC0 Version Details Vulnerabilities
31 Application Apache Traffic Server 7.1.4 RC1 Version Details Vulnerabilities
32 Application Apache Traffic Server 7.1.5 Version Details Vulnerabilities
33 Application Apache Traffic Server 8.0.0 Version Details Vulnerabilities
34 Application Apache Traffic Server 8.0.0 RC0 Version Details Vulnerabilities
35 Application Apache Traffic Server 8.0.0 RC1 Version Details Vulnerabilities
36 Application Apache Traffic Server 8.0.0 RC2 Version Details Vulnerabilities
37 Application Apache Traffic Server 8.0.0 RC3 Version Details Vulnerabilities
38 Application Apache Traffic Server 8.0.0 RC4 Version Details Vulnerabilities
39 Application Apache Traffic Server 8.0.1 Version Details Vulnerabilities
40 Application Apache Traffic Server 8.0.2 Version Details Vulnerabilities
41 Application Apache Traffic Server 8.0.3 Version Details Vulnerabilities
42 Application Apple Swiftnio 1.0.0 Version Details Vulnerabilities
43 Application Apple Swiftnio 1.0.1 Version Details Vulnerabilities
44 Application Apple Swiftnio 1.1.0 Version Details Vulnerabilities
45 Application Apple Swiftnio 1.1.1 Version Details Vulnerabilities
46 Application Apple Swiftnio 1.2.0 Version Details Vulnerabilities
47 Application Apple Swiftnio 1.2.1 Version Details Vulnerabilities
48 Application Apple Swiftnio 1.2.2 Version Details Vulnerabilities
49 Application Apple Swiftnio 1.3.0 Version Details Vulnerabilities
50 Application Apple Swiftnio 1.3.1 Version Details Vulnerabilities
51 Application Apple Swiftnio 1.3.2 Version Details Vulnerabilities
52 Application Apple Swiftnio 1.4.0 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Apache Traffic Server 41
Apple Swiftnio 11

- References For CVE-2019-9515

https://www.debian.org/security/2019/dsa-4508
DEBIAN DSA-4508
https://security.netapp.com/advisory/ntap-20190823-0005/ CONFIRM
https://www.synology.com/security/advisory/Synology_SA_19_33 CONFIRM
https://lists.fedoraproject.org/archives/list/[email protected]/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/
FEDORA FEDORA-2019-6a2980de56
https://lists.fedoraproject.org/archives/list/[email protected]/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/
FEDORA FEDORA-2019-5a6a7bc12c
http://seclists.org/fulldisclosure/2019/Aug/16
FULLDISC 20190816 APPLE-SA-2019-08-13-5 SwiftNIO HTTP/2 1.5.0
https://seclists.org/bugtraq/2019/Aug/43
BUGTRAQ 20190825 [SECURITY] [DSA 4508-1] h2o security update
https://seclists.org/bugtraq/2019/Aug/24
BUGTRAQ 20190814 APPLE-SA-2019-08-13-5 SwiftNIO HTTP/2 1.5.0
https://kb.cert.org/vuls/id/605641/
CERT-VN VU#605641
https://support.f5.com/csp/article/K50233772 CONFIRM
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md
https://lists.apache.org/thread.html/[email protected]%3Cdev.trafficserver.apache.org%3E
MLIST [trafficserver-dev] 20190813 Apache Traffic Server is vulnerable to various HTTP/2 attacks
https://lists.apache.org/thread.html/[email protected]%3Cannounce.trafficserver.apache.org%3E
MLIST [trafficserver-announce] 20190813 Apache Traffic Server is vulnerable to various HTTP/2 attacks
https://lists.apache.org/thread.html/[email protected]%3Cusers.trafficserver.apache.org%3E
MLIST [trafficserver-users] 20190813 Apache Traffic Server is vulnerable to various HTTP/2 attacks

- Vulnerability Conditions

Vulnerability is valid if product versions listed below are used TOGETHER WITH(AND)

- Metasploit Modules Related To CVE-2019-9515

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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