CVE-2017-18017

Description

The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 37.59% Top 5%
Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.debian.org/security/2018/dsa-4187 third party advisory vendor advisory
https://usn.ubuntu.com/3583-2/ third party advisory vendor advisory
http://patchwork.ozlabs.org/patch/746618/ third party advisory patch
https://access.redhat.com/errata/RHSA-2018:1737 third party advisory vendor advisory
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.36 release notes vendor advisory
https://lkml.org/lkml/2017/4/2/13 third party advisory
https://access.redhat.com/errata/RHSA-2018:1062 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:1319 third party advisory vendor advisory
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0 third party advisory
https://usn.ubuntu.com/3583-1/ third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:0676 third party advisory vendor advisory
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1739765 issue tracking third party advisory
https://github.com/torvalds/linux/commit/2638fd0f92d4397884fd991d8f4925cb3f081901 third party advisory patch
https://access.redhat.com/errata/RHSA-2018:1170 third party advisory vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2638fd0f92d4397884fd991d8f4925cb3f081901 third party advisory patch
https://access.redhat.com/errata/RHSA-2018:1130 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html third party advisory mailing list
http://www.securityfocus.com/bid/102367 vdb entry third party advisory broken link
http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00067.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00072.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00008.html mailing list third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3583-1 third party advisory vendor advisory
https://support.f5.com/csp/article/K18352029 third party advisory
http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00047.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00013.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2018-04/msg00014.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00015.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00038.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00070.html mailing list third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3583-2 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.html mailing list third party advisory vendor advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/4577-security-advisory-34 third party advisory mitigation
https://security.netapp.com/advisory/ntap-20250103-0010/

Frequently Asked Questions

What is the severity of CVE-2017-18017?
CVE-2017-18017 has been scored as a critical severity vulnerability.
How to fix CVE-2017-18017?
To fix CVE-2017-18017, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-18017 being actively exploited in the wild?
It is possible that CVE-2017-18017 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~38% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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