ID

VAR-201908-1958

CVE

CVE-2019-9506

TITLE

Bluetooth BR/EDR supported devices are vulnerable to key negotiation attacks

DESCRIPTION

The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key length and does not prevent an attacker from influencing the key length negotiation. This allows practical brute-force attacks (aka "KNOB") that can decrypt traffic and inject arbitrary ciphertext without the victim noticing. Once the entropy is reduced, the attacker can brute-force the encryption key and use it to decrypt communications. Bluetooth BR/EDR is a Bluetooth BR/EDR (Basic Rate/Enhanced Data Rate) standard. An encryption issue vulnerability exists in Bluetooth BR/EDR 5.1 and earlier versions. The vulnerability stems from incorrect use of relevant cryptographic algorithms by network systems or products, resulting in improperly encrypted content, weak encryption, and storing sensitive information in plain text. A weakness in the Bluetooth Basic Rate/Enhanced Data Rate (BR/EDR) protocol core specification exposes a vulnerability that could allow for an unauthenticated, adjacent malicious user to perform a man-in-the-middle attack on an encrypted Bluetooth connection. The attack must be performed during negotiation or renegotiation of a paired device connection; existing sessions cannot be attacked. The issue could allow the malicious user to reduce the entropy of the negotiated session key that is used to secure a Bluetooth connection between a paired device and a host device. An attacker who can successfully inject a malicious message into a Bluetooth connection during session negotiation or renegotiation could cause the strength of the session key to be susceptible to brute force attack. This advisory will be updated as additional information becomes available. There are no workarounds that address this vulnerability. This advisory is available at the following link: tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190813-bluetooth. Bug Fix(es): * Backport TCP follow-up for small buffers (BZ#1739184) * TCP performance regression after CVE-2019-11478 bug fix (BZ#1743170) * RHEL8.0 - bnx2x link down, caused by transmit timeouts during load test (Marvell/Cavium/QLogic) (L3:) (BZ#1743548) * block: blk-mq improvement (BZ#1780567) * RHEL8.0 - Regression to RHEL7.6 by changing force_latency found during RHEL8.0 validation for SAP HANA on POWER (BZ#1781111) * blk-mq: overwirte performance drops on real MQ device (BZ#1782183) * RHEL8: creating vport takes lot of memory i.e 2GB per vport which leads to drain out system memory quickly. (BZ#1782705) 4. 7.5) - ppc64, ppc64le, x86_64 3. Bug Fix(es): * TCP packets are segmented when sent to the VLAN device when coming from VXLAN dev. 7.2) - x86_64 3. Bug Fix(es): * port show-kabi to python3 (BZ#1806924) 4. 8) - aarch64, noarch, ppc64le, s390x, x86_64 3. Bugs fixed (https://bugzilla.redhat.com/): 1192519 - CVE-2015-1593 kernel: Linux stack ASLR implementation Integer overflow 1656432 - [cgroup bpf devices] BPF program is not properly freed 1656986 - CVE-2018-19854 kernel: Information Disclosure in crypto_report_one in crypto/crypto_user.c 1660375 - CVE-2018-16884 kernel: nfs: use-after-free in svc_process_common() 1660385 - CVE-2018-20169 kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS 1663176 - CVE-2019-3459 kernel: Heap address information leak while using L2CAP_GET_CONF_OPT 1663179 - CVE-2019-3460 kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP 1664110 - CVE-2019-5489 Kernel: page cache side channel attacks 1666106 - CVE-2018-19985 kernel: oob memory read in hso_probe in drivers/net/usb/hso.c 1671930 - CVE-2019-7222 Kernel: KVM: leak of uninitialized stack contents to guest 1686373 - CVE-2019-3874 kernel: SCTP socket buffer memory leak leading to denial of service 1689426 - CVE-2019-3882 kernel: denial of service vector through vfio DMA mappings 1694143 - Misc updates to PCI subsystem from v4.20 1698757 - CVE-2019-3900 Kernel: vhost_net: infinite loop while receiving packets leads to DoS 1705937 - CVE-2019-11599 kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping 1709837 - CVE-2019-11884 kernel: sensitive information disclosure from kernel stack memory via HIDPCONNADD command 1712072 - CVE-2019-11833 kernel: fs/ext4/extents.c leads to information disclosure 1712197 - crash in is_size_safe_to_change as the result of race condition in management of cifsInodeInfo->openFileList 1716992 - CVE-2019-10126 kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c 1719067 - BUG: EACCES on writing empty value to /proc/self/attr/keycreate 1721034 - [RHEL8 xfs]: fix reporting supported extra file attributes for statx 1727756 - CVE-2019-13233 kernel: use-after-free in arch/x86/lib/insn-eval.c 1727857 - CVE-2019-9506 hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) 1729931 - CVE-2019-10638 Kernel: net: weak IP ID generation leads to remote device tracking 1733874 - CVE-2019-10207 kernel: null-pointer dereference in hci_uart_set_flow_control 1746708 - CVE-2019-14821 Kernel: KVM: OOB memory access via mmio ring buffer 1750813 - CVE-2019-15916 kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service 6. Bug Fix(es): * kernel build: parallelize redhat/mod-sign.sh (BZ#1755326) 4. 7) - ppc64le, x86_64 3. Description: This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Description: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Bug Fix(es): * update the MRG 2.5.z 3.10 realtime-kernel sources (BZ#1751263) 4. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2019:3187-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:3187 Issue date: 2019-10-23 CVE Names: CVE-2019-9506 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Server AUS (v. 7.4) - noarch, x86_64 Red Hat Enterprise Linux Server E4S (v. 7.4) - noarch, ppc64le, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) - ppc64le, x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server TUS (v. 7.4) - noarch, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) (CVE-2019-9506) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * Fix possible Spectre-v1 bugs in wireless code (BZ#1706696) * powerpc/pseries: Disable CPU hotplug across migrations / powerpc/rtas: Fix a potential race between CPU-Offline & Migration (LPM) (BZ#1745436) * powerpc/pseries: Fix unitialized timer reset on migration / powerpc/pseries/mobility: Extend start/stop topology update scope (LPM) (BZ#1745438) * ISST-LTE:PVM:Zeppelin :LPM: Failure logs and stack trace seen during LPM (POWER9/P9) (BZ#1745446) 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. 5. Package List: Red Hat Enterprise Linux Server AUS (v. 7.4): Source: kernel-3.10.0-693.60.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.60.1.el7.noarch.rpm kernel-doc-3.10.0-693.60.1.el7.noarch.rpm x86_64: kernel-3.10.0-693.60.1.el7.x86_64.rpm kernel-debug-3.10.0-693.60.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.60.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.60.1.el7.x86_64.rpm kernel-devel-3.10.0-693.60.1.el7.x86_64.rpm kernel-headers-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.60.1.el7.x86_64.rpm perf-3.10.0-693.60.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm python-perf-3.10.0-693.60.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.4): Source: kernel-3.10.0-693.60.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.60.1.el7.noarch.rpm kernel-doc-3.10.0-693.60.1.el7.noarch.rpm ppc64le: kernel-3.10.0-693.60.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-693.60.1.el7.ppc64le.rpm kernel-debug-3.10.0-693.60.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-693.60.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.60.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.60.1.el7.ppc64le.rpm kernel-devel-3.10.0-693.60.1.el7.ppc64le.rpm kernel-headers-3.10.0-693.60.1.el7.ppc64le.rpm kernel-tools-3.10.0-693.60.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.60.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-693.60.1.el7.ppc64le.rpm perf-3.10.0-693.60.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.60.1.el7.ppc64le.rpm python-perf-3.10.0-693.60.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.60.1.el7.ppc64le.rpm x86_64: kernel-3.10.0-693.60.1.el7.x86_64.rpm kernel-debug-3.10.0-693.60.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.60.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.60.1.el7.x86_64.rpm kernel-devel-3.10.0-693.60.1.el7.x86_64.rpm kernel-headers-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.60.1.el7.x86_64.rpm perf-3.10.0-693.60.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm python-perf-3.10.0-693.60.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.4): Source: kernel-3.10.0-693.60.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.60.1.el7.noarch.rpm kernel-doc-3.10.0-693.60.1.el7.noarch.rpm x86_64: kernel-3.10.0-693.60.1.el7.x86_64.rpm kernel-debug-3.10.0-693.60.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.60.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.60.1.el7.x86_64.rpm kernel-devel-3.10.0-693.60.1.el7.x86_64.rpm kernel-headers-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.60.1.el7.x86_64.rpm perf-3.10.0-693.60.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm python-perf-3.10.0-693.60.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.60.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional E4S (v. 7.4): ppc64le: kernel-debug-debuginfo-3.10.0-693.60.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-693.60.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.60.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.60.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.60.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-693.60.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.60.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.60.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.60.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.60.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.60.1.el7.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2019-9506 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXbAXitzjgjWX9erEAQh25A/9FrjeF3eVkgGwc/RvTRPF/Qqb44x+l61E KceVqzr3avw9TDoiCA8e35ZYwNBvpN6YW/VDiI0vSyj2nQp57xFK48ybhUvXGUKL A2dXn793a3ZBKIp4wVVQKyjBsAI31MT/AZDKrzlugszWlV25u/mc2tC4Yndbe+8e Lbwf2VvKdvtlH26Cadv1UN9YsnmtQuNdGp9NrRbttTCW9rMmHtkoQ/yT4rcS/7Fl 1tu2j2Yoi0GEG9wXWda7cbpd2jLCcpjwIYnrjRNOuMNVSugRKRcAY1rMwpL5dVpA rx2bi3X3HhCpGTgZSJbl9fz2f1J71o9WoUSybaT36Uc50iOs7anoHc82XPGFvkak xg+mkIVNkwGxW9pkum8tZANjhDwyGJl0bpS98zkzpNiBqdrGdN4V9qMmhqmEa/lT lQ7haJR1rqboIzS5uSpTL/a79blwDjnMNsZ3D+c6xFfjsq8yu1zGfDWBbMdoc1Zo 3CNT4+pdBr5ASdlE7R3G+8Zx77WSK2MLxRnzzHBF6KphF4LOOUJmefpZ0KQRGkN8 zOKjvsynVKSzqt++WJrij+U74KL65PZokF8kKSc0yDhgYRaeqK6QIwe+Dbn/YUsn RNBi1ZoILHB9nMxbT5OlEVf/0EJl7oD1zINT0n7S8b86gRnfHdMLlvZ1Kcfjs0Sy Vdo262+aA6k= =FkCN -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote or local

TYPE

encryption problem

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2025-09-28T22:36:22.175000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE