CVE-2018-5391
HIGH severity · CVSS 7.5 · Uncontrolled resource consumption
7.5CVSS HIGH
Summary
The Linux kernel, versions 3.9+, is vulnerable to a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may cause a denial of service condition by sending specially crafted IP fragments. Various vulnerabilities in IP fragmentation have been discovered and fixed over the years. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)24%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2018-004.txtAdvisory
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-linux-en
- http://www.openwall.com/lists/oss-security/2019/06/28/2Advisory
- http://www.openwall.com/lists/oss-security/2019/07/06/3Advisory
- http://www.openwall.com/lists/oss-security/2019/07/06/4Advisory
- http://www.securityfocus.com/bid/105108Advisory
- http://www.securitytracker.com/id/1041476Advisory
- http://www.securitytracker.com/id/1041637Advisory