7.5
CVSSv3

CVE-2019-11477

Published: 19/06/2019 Updated: 27/02/2024
CVSS v2 Base Score: 7.8 | Impact Score: 6.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 696
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Vulnerability Summary

Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit 3b4929f65b0d8249f19a50245cd88ed1a2f78cff.

Vulnerability Trend

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linux linux kernel

f5 big-ip advanced firewall manager

f5 big-ip advanced firewall manager 15.0.0

f5 big-ip access policy manager

f5 big-ip access policy manager 15.0.0

f5 big-ip application acceleration manager

f5 big-ip application acceleration manager 15.0.0

f5 big-ip link controller

f5 big-ip link controller 15.0.0

f5 big-ip policy enforcement manager

f5 big-ip policy enforcement manager 15.0.0

f5 big-ip webaccelerator

f5 big-ip webaccelerator 15.0.0

f5 big-ip application security manager

f5 big-ip application security manager 15.0.0

f5 big-ip local traffic manager

f5 big-ip local traffic manager 15.0.0

f5 big-ip fraud protection service

f5 big-ip fraud protection service 15.0.0

f5 big-ip global traffic manager

f5 big-ip global traffic manager 15.0.0

f5 big-ip analytics

f5 big-ip analytics 15.0.0

f5 big-ip edge gateway

f5 big-ip edge gateway 15.0.0

f5 big-ip domain name system

f5 big-ip domain name system 15.0.0

canonical ubuntu linux 16.04

canonical ubuntu linux 12.04

canonical ubuntu linux 18.04

canonical ubuntu linux 18.10

canonical ubuntu linux 19.04

canonical ubuntu linux 14.04

redhat enterprise linux 7.0

redhat enterprise linux 6.0

redhat enterprise linux aus 6.6

redhat enterprise linux 5.0

redhat enterprise linux aus 6.5

redhat enterprise linux eus 7.4

redhat enterprise linux eus 7.5

redhat enterprise linux 8.0

redhat enterprise linux atomic host -

redhat enterprise mrg 2.0

pulsesecure pulse policy secure -

pulsesecure pulse secure virtual application delivery controller -

ivanti connect secure -

f5 traffix signaling delivery controller

Vendor Advisories

Debian Bug report logs - #928989 linux-image-4190-4-amd64: CVE-2019-11815 Package: src:linux; Maintainer for src:linux is Debian Kernel Team <debian-kernel@listsdebianorg>; Reported by: Jeff Cliff <jeffreycliff@gmailcom> Date: Tue, 14 May 2019 18:39:01 UTC Severity: important Tags: security Found in versions l ...
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks CVE-2019-3846 , CVE-2019-10126 huangwen reported multiple buffer overflows in the Marvell wifi (mwifiex) driver, which a local user could use to cause denial of service or the execution of ar ...
The system could be made to crash if it received specially crafted network traffic ...
CVE-2019-11477, CVE-2019-11478 and CVE-2019-11479 describe vulnerabilities in the Linux kernel that can be remotely exploited using a specially crafted TCP connection, crashing the targeted system The latest Amazon Linux AMIs as available in AWS EC2 already contain these kernels and are not vulnerable ...
CVE-2019-11477, CVE-2019-11478 and CVE-2019-11479 describe vulnerabilities in the Linux kernel that can be remotely exploited using a specially crafted TCP connection, crashing the targeted system The latest Amazon Linux 2 AMIs as available in AWS EC2 already contain these kernels and are not vulnerable ...
Synopsis Important: kernel security, bug fix, and enhancement update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 74 Extended Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Comm ...
Synopsis Important: kernel security and bug fix update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 73 Advanced Update Support, Red Hat Enterprise Linux 73 Telco Extended Update Support, and Red Hat Enterprise Linux 73 Update Services ...
Synopsis Important: kernel security and bug fix update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 8Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) b ...
Synopsis Important: kernel security and bug fix update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 66 Advanced Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerabili ...
Synopsis Important: kernel security and bug fix update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 72 Advanced Update Support, Red Hat Enterprise Linux 72 Telco Extended Update Support, and Red Hat Enterprise Linux 72 Update Services ...
Synopsis Important: redhat-virtualization-host security and enhancement update Type/Severity Security Advisory: Important Topic An update for redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a sec ...
Synopsis Important: kernel security and bug fix update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 65 Advanced Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerabili ...
Synopsis Important: kernel-rt security and bug fix update Type/Severity Security Advisory: Important Topic An update for kernel-rt is now available for Red Hat Enterprise MRG 2Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVS ...
Synopsis Important: kernel-rt security update Type/Severity Security Advisory: Important Topic An update for kernel-rt is now available for Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) base sc ...
Synopsis Important: kernel security and bug fix update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 6Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) b ...
Synopsis Important: kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) base score, w ...
Synopsis Important: redhat-virtualization-host security update Type/Severity Security Advisory: Important Topic An update for redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Red Hat Product Security has rated this updated as having a security impact of ...
Synopsis Important: kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 75 Extended Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring S ...
Synopsis Important: kernel-rt security and bug fix update Type/Severity Security Advisory: Important Topic An update for kernel-rt is now available for Red Hat Enterprise Linux 8Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (C ...
An integer overflow has been discovered in the Linux kernel when handling TCP Selective Acknowledgments (SACKs) A sequence of SACKs may be crafted such that one can trigger a kernel panic A remote attacker could use this to cause a denial of service (system crash) ...
Description of Problem Multiple denial of service vulnerabilities have been identified in the Citrix SD-WAN Appliance and Citrix SD-WAN Center Management Console These vulnerabilities could permit a remote attacker to cause a denial of service by causing a host crash or by causing reduced service capacity due to resource exhaustion The vulnerabil ...
An integer overflow vulnerability was found in the way the Linux kernel's networking subsystem processed TCP Selective Acknowledgment (SACK) segments A remote attacker could use this to cause a denial of service (Vulnerability ID: HWPSIRT-2019-06130) This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2019-11 ...
PAN-SA-2019-0013 Information about TCP SACK Panic Findings in PAN-OS ...

Mailing Lists

<!--X-Body-Begin--> <!--X-User-Header--> oss-sec mailing list archives <!--X-User-Header-End--> <!--X-TopPNI--> By Date By Thread </form> <!--X-TopPNI-End--> <!--X-MsgBody--> <!--X-Subject-Header-Begin--> Re: linux-distros membership application - Microsoft <!--X-Subject-Header-End--> <!--X-Head-of-Message--> From: Sasha Levin ...

Github Repositories

Chef cookbook with persistent syctl fix for TCP SACK DoS vulnerability

Fix CVE-2019-11477 SACK Panic Denial of Service Introduction This cookbook is a useful example of basic chef functionality Consisting of just two components, the metadata and the recipe, it is a good example for teaching core chef concepts Default Recipe The default recipe sets a sysctl variable: netipv4tcp_sack = 0 With SACK disabled

CVE-2019-11477-ubuntu-livepatch github kpatch 04 kpatch-build -t vmlinux ubuntu-440-62-genericpatch --skip-gcc-check kpatch load kpatch-ubuntu-4-4-0-62-generic-CVE-2019-11477ko

docLinux Изменение размера root lvm раздела Логирование вывода консоли Перенаправления OOM killer mount - примеры Демон подкачки ядра (kswapd) Заставить «OOM killer'а» игнорировать процесс Как просмотреть активные проце

Статьи о Linux

docLinux Изменение размера root lvm раздела Логирование вывода консоли Перенаправления OOM killer mount - примеры Демон подкачки ядра (kswapd) Заставить «OOM killer'а» игнорировать процесс Как просмотреть активные проце

Frankfurter Freifunk-Firmware Firmware-Branches Stable Die aktuelle Stabile Firmware Die Releases basieren auf den Git-Tags, die unter githubcom/freifunk-ffm/site-ffffm/releases zu finden sind Wenn du selbst eine Stable-Firmware bauen willst, musst du den entsprechenden Tag auschecken und mittels "/cish" bauen RC Eine Release Candidate-Firmware ist eine

docLinux Изменение размера root lvm раздела Логирование вывода консоли Перенаправления OOM killer mount - примеры Демон подкачки ядра (kswapd) Заставить «OOM killer'а» игнорировать процесс Как просмотреть активные проце

proj283-Automated-Security-Testing-of-Protocol-Stacks-in-OS-kernels 标题 操作系统内核协议栈的自动化安全测试 Automated Security Testing of Protocol Stacks in OS kernels 项目描述 操作系统内核中集成了TCP/IP、WiFi、蓝牙、USB等多种主流协议栈,用于实现设备间的数据传输和通信交互。然而,现有内核协议栈的缺陷

Recent Articles

Sad SACK: Linux PCs, servers, gadgets may be crashed by 'Ping of Death' network packets
The Register • Shaun Nichols in San Francisco • 17 Jun 2019

Don't let miscreants play hacky-SACK with your gear. Apply these mitigations, patches now if you can

It is possible to crash vulnerable network-facing Linux servers, PCs, and gadgets, or slow down their network connections, by sending them a series of maliciously crafted packets. It is also possible to hamper vulnerable FreeBSD machines with the same attack. Given that Linux powers an incredible amount of stuff these days, all sorts of gear from network or internet-connected TVs, routers, thermostats, light switches, CCTV cameras, and robot vacuum cleaners, to servers, PCs, smart fridges, phone...

References

CWE-190https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.mdhttps://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SACKPanichttps://access.redhat.com/security/vulnerabilities/tcpsackhttps://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=3b4929f65b0d8249f19a50245cd88ed1a2f78cffhttps://support.f5.com/csp/article/K78234183http://packetstormsecurity.com/files/153346/Kernel-Live-Patch-Security-Notice-LSN-0052-1.htmlhttps://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193https://www.kb.cert.org/vuls/id/905115http://www.openwall.com/lists/oss-security/2019/06/20/3https://www.synology.com/security/advisory/Synology_SA_19_28https://security.netapp.com/advisory/ntap-20190625-0001/https://access.redhat.com/errata/RHSA-2019:1594https://access.redhat.com/errata/RHSA-2019:1602https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0006https://kc.mcafee.com/corporate/index?page=content&id=SB10287http://www.openwall.com/lists/oss-security/2019/06/28/2http://www.vmware.com/security/advisories/VMSA-2019-0010.htmlhttp://www.openwall.com/lists/oss-security/2019/07/06/3http://www.openwall.com/lists/oss-security/2019/07/06/4https://access.redhat.com/errata/RHSA-2019:1699https://cert-portal.siemens.com/productcert/pdf/ssa-462066.pdfhttps://www.us-cert.gov/ics/advisories/icsa-19-253-03http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.htmlhttp://www.openwall.com/lists/oss-security/2019/10/24/1http://www.openwall.com/lists/oss-security/2019/10/29/3http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191225-01-kernel-enhttps://www.oracle.com/security-alerts/cpujan2020.htmlhttp://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txthttps://www.oracle.com/security-alerts/cpuoct2020.htmlhttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=928989https://nvd.nist.govhttps://usn.ubuntu.com/4017-2/https://www.cisa.gov/uscert/ics/advisories/icsa-19-253-03https://www.kb.cert.org/vuls/id/905115