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
AI Score
Confidence
High
EPSS
Percentile
92.4%
Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU.
Vendor | Product | Version | CPE |
---|---|---|---|
apple | swiftnio | * | cpe:2.3:a:apple:swiftnio:*:*:*:*:*:*:*:* |
apple | mac_os_x | * | cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* |
canonical | ubuntu_linux | * | cpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:* |
apache | traffic_server | * | cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:* |
canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
canonical | ubuntu_linux | 19.04 | cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* |
debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
debian | debian_linux | 10.0 | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
fedoraproject | fedora | 30 | cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* |
lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html
lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html
lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.html
lists.opensuse.org/opensuse-security-announce/2019-10/msg00003.html
lists.opensuse.org/opensuse-security-announce/2019-10/msg00005.html
lists.opensuse.org/opensuse-security-announce/2019-10/msg00014.html
access.redhat.com/errata/RHSA-2019:2692
access.redhat.com/errata/RHSA-2019:2745
access.redhat.com/errata/RHSA-2019:2746
access.redhat.com/errata/RHSA-2019:2775
access.redhat.com/errata/RHSA-2019:2799
access.redhat.com/errata/RHSA-2019:2925
access.redhat.com/errata/RHSA-2019:2939
access.redhat.com/errata/RHSA-2019:2949
access.redhat.com/errata/RHSA-2019:2955
access.redhat.com/errata/RHSA-2019:2966
access.redhat.com/errata/RHSA-2019:3041
access.redhat.com/errata/RHSA-2019:3932
access.redhat.com/errata/RHSA-2019:3933
access.redhat.com/errata/RHSA-2019:3935
github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md
kb.cert.org/vuls/id/605641/
kc.mcafee.com/corporate/index?page=content&id=SB10296
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JUBYAF6ED3O4XCHQ5C2HYENJLXYXZC4M/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZLUYPYY3RX4ZJDWZRJIKSULYRJ4PXW7/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/POPAEC4FWL4UU4LDEGPY5NPALU24FFQD/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TAZZEVTCN2B4WT6AIBJ7XGYJMBTORJU5/
seclists.org/bugtraq/2019/Aug/40
seclists.org/bugtraq/2019/Sep/1
security.netapp.com/advisory/ntap-20190823-0002/
security.netapp.com/advisory/ntap-20190823-0005/
support.f5.com/csp/article/K02591030
support.f5.com/csp/article/K02591030?utm_source=f5support&%3Butm_medium=RSS
usn.ubuntu.com/4099-1/
www.debian.org/security/2019/dsa-4505
www.debian.org/security/2019/dsa-4511
www.debian.org/security/2020/dsa-4669
www.oracle.com/security-alerts/cpujan2021.html
www.oracle.com/security-alerts/cpuoct2020.html
www.synology.com/security/advisory/Synology_SA_19_33
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
AI Score
Confidence
High
EPSS
Percentile
92.4%