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Vulnerability Details : CVE-2019-11477

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.
Publish Date : 2019-06-19 Last Update Date : 2020-10-20
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- CVSS Scores & Vulnerability Types

CVSS Score
7.8
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceOverflow
CWE ID 190

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2019:1479: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20191479 unix
RHSA-2019:1480: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20191480 unix
RHSA-2019:1481: kernel security update (Important) oval:com.redhat.rhsa:def:20191481 unix
RHSA-2019:1486: kernel-rt security update (Important) oval:com.redhat.rhsa:def:20191486 unix
RHSA-2019:1488: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20191488 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-11477

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 12.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
4 OS Canonical Ubuntu Linux 18.04 * * * Version Details Vulnerabilities
5 OS Canonical Ubuntu Linux 18.10 * * * Version Details Vulnerabilities
6 OS Canonical Ubuntu Linux 19.04 * * * Version Details Vulnerabilities
7 Application F5 Big-ip Access Policy Manager * * * * Version Details Vulnerabilities
8 Application F5 Big-ip Access Policy Manager 15.0.0 * * * Version Details Vulnerabilities
9 Application F5 Big-ip Advanced Firewall Manager * * * * Version Details Vulnerabilities
10 Application F5 Big-ip Advanced Firewall Manager 15.0.0 * * * Version Details Vulnerabilities
11 Application F5 Big-ip Analytics * * * * Version Details Vulnerabilities
12 Application F5 Big-ip Analytics 15.0.0 * * * Version Details Vulnerabilities
13 Application F5 Big-ip Application Acceleration Manager * * * * Version Details Vulnerabilities
14 Application F5 Big-ip Application Acceleration Manager 15.0.0 * * * Version Details Vulnerabilities
15 Application F5 Big-ip Application Security Manager * * * * Version Details Vulnerabilities
16 Application F5 Big-ip Application Security Manager 15.0.0 * * * Version Details Vulnerabilities
17 Application F5 Big-ip Domain Name System * * * * Version Details Vulnerabilities
18 Application F5 Big-ip Domain Name System 15.0.0 * * * Version Details Vulnerabilities
19 Application F5 Big-ip Edge Gateway * * * * Version Details Vulnerabilities
20 Application F5 Big-ip Edge Gateway 15.0.0 * * * Version Details Vulnerabilities
21 Application F5 Big-ip Fraud Protection Service * * * * Version Details Vulnerabilities
22 Application F5 Big-ip Fraud Protection Service 15.0.0 * * * Version Details Vulnerabilities
23 Application F5 Big-ip Global Traffic Manager * * * * Version Details Vulnerabilities
24 Application F5 Big-ip Global Traffic Manager 15.0.0 * * * Version Details Vulnerabilities
25 Application F5 Big-ip Link Controller * * * * Version Details Vulnerabilities
26 Application F5 Big-ip Link Controller 15.0.0 * * * Version Details Vulnerabilities
27 Application F5 Big-ip Local Traffic Manager * * * * Version Details Vulnerabilities
28 Application F5 Big-ip Local Traffic Manager 15.0.0 * * * Version Details Vulnerabilities
29 Application F5 Big-ip Policy Enforcement Manager * * * * Version Details Vulnerabilities
30 Application F5 Big-ip Policy Enforcement Manager 15.0.0 * * * Version Details Vulnerabilities
31 Application F5 Big-ip Webaccelerator * * * * Version Details Vulnerabilities
32 Application F5 Big-ip Webaccelerator 15.0.0 * * * Version Details Vulnerabilities
33 Application F5 Traffix Sdc * * * * Version Details Vulnerabilities
34 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
35 Application Pulsesecure Pulse Connect Secure - * * * Version Details Vulnerabilities
36 Application Pulsesecure Pulse Policy Secure - * * * Version Details Vulnerabilities
37 Application Pulsesecure Pulse Secure Virtual Application Delivery Controller - * * * Version Details Vulnerabilities
38 OS Redhat Enterprise Linux 5.0 * * * Version Details Vulnerabilities
39 OS Redhat Enterprise Linux 6.0 * * * Version Details Vulnerabilities
40 OS Redhat Enterprise Linux 7.0 * * * Version Details Vulnerabilities
41 OS Redhat Enterprise Linux 8.0 * * * Version Details Vulnerabilities
42 Application Redhat Enterprise Linux Atomic Host - * * * Version Details Vulnerabilities
43 OS Redhat Enterprise Linux Aus 6.5 * * * Version Details Vulnerabilities
44 OS Redhat Enterprise Linux Aus 6.6 * * * Version Details Vulnerabilities
45 OS Redhat Enterprise Linux Eus 7.4 * * * Version Details Vulnerabilities
46 OS Redhat Enterprise Linux Eus 7.5 * * * Version Details Vulnerabilities
47 OS Redhat Enterprise Mrg 2.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 6
F5 Big-ip Access Policy Manager 2
F5 Big-ip Advanced Firewall Manager 2
F5 Big-ip Analytics 2
F5 Big-ip Application Acceleration Manager 2
F5 Big-ip Application Security Manager 2
F5 Big-ip Domain Name System 2
F5 Big-ip Edge Gateway 2
F5 Big-ip Fraud Protection Service 2
F5 Big-ip Global Traffic Manager 2
F5 Big-ip Link Controller 2
F5 Big-ip Local Traffic Manager 2
F5 Big-ip Policy Enforcement Manager 2
F5 Big-ip Webaccelerator 2
F5 Traffix Sdc 1
Linux Linux Kernel 1
Pulsesecure Pulse Connect Secure 1
Pulsesecure Pulse Policy Secure 1
Pulsesecure Pulse Secure Virtual Application Delivery Controller 1
Redhat Enterprise Linux 4
Redhat Enterprise Linux Atomic Host 1
Redhat Enterprise Linux Aus 2
Redhat Enterprise Linux Eus 2
Redhat Enterprise Mrg 1

- References For CVE-2019-11477

https://www.oracle.com/security-alerts/cpuoct2020.html
http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txt CONFIRM
https://www.oracle.com/security-alerts/cpujan2020.html
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191225-01-kernel-en CONFIRM
http://www.openwall.com/lists/oss-security/2019/10/29/3
MLIST [oss-security] 20191029 Re: Membership application for linux-distros - VMware
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
http://www.openwall.com/lists/oss-security/2019/10/24/1
MLIST [oss-security] 20191023 Membership application for linux-distros - VMware
http://www.openwall.com/lists/oss-security/2019/07/06/3
MLIST [oss-security] 20190706 Re: linux-distros membership application - Microsoft
https://kc.mcafee.com/corporate/index?page=content&id=SB10287 CONFIRM
http://www.openwall.com/lists/oss-security/2019/07/06/4
MLIST [oss-security] 20190706 Re: linux-distros membership application - Microsoft
https://www.us-cert.gov/ics/advisories/icsa-19-253-03
http://www.openwall.com/lists/oss-security/2019/06/28/2
MLIST [oss-security] 20190628 Re: linux-distros membership application - Microsoft
http://www.vmware.com/security/advisories/VMSA-2019-0010.html CONFIRM
https://cert-portal.siemens.com/productcert/pdf/ssa-462066.pdf CONFIRM
https://access.redhat.com/errata/RHSA-2019:1602
REDHAT RHSA-2019:1602
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0006 CONFIRM
https://www.kb.cert.org/vuls/id/905115
CERT-VN VU#905115
http://www.openwall.com/lists/oss-security/2019/06/20/3
MLIST [oss-security] 20190620 Re: Linux and FreeBSD Kernel: Multiple TCP-based remote denial of service issues
https://security.netapp.com/advisory/ntap-20190625-0001/ CONFIRM
https://access.redhat.com/errata/RHSA-2019:1594
REDHAT RHSA-2019:1594
https://www.synology.com/security/advisory/Synology_SA_19_28 CONFIRM
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193 CONFIRM
https://support.f5.com/csp/article/K78234183 CONFIRM
http://packetstormsecurity.com/files/153346/Kernel-Live-Patch-Security-Notice-LSN-0052-1.html
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=3b4929f65b0d8249f19a50245cd88ed1a2f78cff
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SACKPanic
https://access.redhat.com/security/vulnerabilities/tcpsack
https://access.redhat.com/errata/RHSA-2019:1699
REDHAT RHSA-2019:1699

- Metasploit Modules Related To CVE-2019-11477

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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