CVE-2019-9516 Information

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Feb 14, 2021 cve

Description

Some HTTP/2 implementations are vulnerable to a header leak potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory for these headers and keep the allocation alive until the session dies. This can consume excess memory.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00014.html http://seclists.org/fulldisclosure/2019/Aug/16 https://access.redhat.com/errata/RHSA-2019:2745 https://access.redhat.com/errata/RHSA-2019:2746 https://access.redhat.com/errata/RHSA-2019:2775 https://access.redhat.com/errata/RHSA-2019:2799 https://access.redhat.com/errata/RHSA-2019:2925 https://access.redhat.com/errata/RHSA-2019:2939 https://access.redhat.com/errata/RHSA-2019:2946 https://access.redhat.com/errata/RHSA-2019:2950 https://access.redhat.com/errata/RHSA-2019:2955 https://access.redhat.com/errata/RHSA-2019:2966 https://access.redhat.com/errata/RHSA-2019:3932 https://access.redhat.com/errata/RHSA-2019:3933 https://access.redhat.com/errata/RHSA-2019:3935 https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md https://kb.cert.org/vuls/id/605641/ https://kc.mcafee.com/corporate/index?page=content&id=SB10296 https://lists.fedoraproject.org/archives/list/[email protected]/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/ https://lists.fedoraproject.org/archives/list/[email protected]/message/BP556LEG3WENHZI5TAQ6ZEBFTJB4E2IS/ https://lists.fedoraproject.org/archives/list/[email protected]/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/ https://lists.fedoraproject.org/archives/list/[email protected]/message/POPAEC4FWL4UU4LDEGPY5NPALU24FFQD/ https://lists.fedoraproject.org/archives/list/[email protected]/message/TAZZEVTCN2B4WT6AIBJ7XGYJMBTORJU5/ https://lists.fedoraproject.org/archives/list/[email protected]/message/XHTKU7YQ5EEP2XNSAV4M4VJ7QCBOJMOD/ https://seclists.org/bugtraq/2019/Aug/24 https://seclists.org/bugtraq/2019/Aug/40 https://security.netapp.com/advisory/ntap-20190823-0002/ https://security.netapp.com/advisory/ntap-20190823-0005/ https://support.f5.com/csp/article/K02591030 https://support.f5.com/csp/article/K02591030?utm_source=f5support&utm_medium=RSS https://usn.ubuntu.com/4099-1/ https://www.debian.org/security/2019/dsa-4505 https://www.synology.com/security/advisory/Synology_SA_19_33

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5