Vulnerability identifier: #VU14200
Vulnerability risk: Medium
CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-400
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to the system uses an inefficient TCP reassembly algorithm. A remote attacker can send specially crafted packets within ongoing TCP sessions to consume excessive CPU resources and cause the service to crash.
Note: The issue has been called "SegmentSmack".
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel: 4.9 - 4.9.118, 4.14 - 4.14.61, 4.4.90 - 4.4.99, 4.10.0 - 4.10.17, 4.11 - 4.11.12, 4.12 - 4.12.14, 4.13 - 4.13.16, 4.15 - 4.15.18, 4.16 - 4.16.18, 4.17 - 4.17.13
External links
http://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=1a4f14bab1868b443f0dd3c55b689a478f82e72e
http://www.kb.cert.org/vuls/id/962459
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.