CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
94.3%
Some HTTP/2 implementations are vulnerable to window size manipulation and
stream prioritization manipulation, potentially leading to a denial of
service. The attacker requests a large amount of data from a specified
resource over multiple streams. They manipulate window size and stream
priority to force the server to queue the data in 1-byte chunks. Depending
on how efficiently this data is queued, this can consume excess CPU,
memory, or both.
Author | Note |
---|---|
sbeattie | nginx added http2 support in 1.9.5 nghttp2: nghttpd and nghttp are affected, libnghttp2 is not |
mdeslaur | nghttp2-server is in universe |
sahnaseredini | nodejs patch is a version upgrade |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | nghttp2 | < 1.30.0-1ubuntu1+esm2 | UNKNOWN |
ubuntu | 16.04 | noarch | nghttp2 | < 1.7.1-1ubuntu0.1~esm2 | UNKNOWN |
ubuntu | 18.04 | noarch | nginx | < 1.14.0-0ubuntu1.4 | UNKNOWN |
ubuntu | 19.04 | noarch | nginx | < 1.15.9-0ubuntu1.1 | UNKNOWN |
ubuntu | 19.10 | noarch | nginx | < 1.16.1-0ubuntu1 | UNKNOWN |
ubuntu | 20.04 | noarch | nginx | < 1.16.1-0ubuntu1 | UNKNOWN |
ubuntu | 20.10 | noarch | nginx | < 1.16.1-0ubuntu1 | UNKNOWN |
ubuntu | 21.04 | noarch | nginx | < 1.16.1-0ubuntu1 | UNKNOWN |
ubuntu | 21.10 | noarch | nginx | < 1.16.1-0ubuntu1 | UNKNOWN |
ubuntu | 22.04 | noarch | nginx | < 1.16.1-0ubuntu1 | UNKNOWN |
github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md
github.com/nodejs/node/pull/29133
github.com/nodejs/node/pull/29148
github.com/nodejs/node/pull/29152
launchpad.net/bugs/cve/CVE-2019-9511
nvd.nist.gov/vuln/detail/CVE-2019-9511
security-tracker.debian.org/tracker/CVE-2019-9511
ubuntu.com/security/notices/USN-4099-1
ubuntu.com/security/notices/USN-6754-1
www.cve.org/CVERecord?id=CVE-2019-9511
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
94.3%