ID CVE-2018-6922
Summary One of the data structures that holds TCP segments in all versions of FreeBSD prior to 11.2-RELEASE-p1, 11.1-RELEASE-p12, and 10.4-RELEASE-p10 uses an inefficient algorithm to reassemble the data. This causes the CPU time spent on segment processing to grow linearly with the number of segments in the reassembly queue. An attacker who has the ability to send TCP traffic to a victim system can degrade the victim system's network performance and/or consume excessive CPU by exploiting the inefficiency of TCP reassembly handling, with relatively small bandwidth cost.
References
Vulnerable Configurations
  • cpe:2.3:o:freebsd:freebsd:10.4
    cpe:2.3:o:freebsd:freebsd:10.4
  • cpe:2.3:o:freebsd:freebsd:10.4:p1
    cpe:2.3:o:freebsd:freebsd:10.4:p1
  • cpe:2.3:o:freebsd:freebsd:10.4:p2
    cpe:2.3:o:freebsd:freebsd:10.4:p2
  • cpe:2.3:o:freebsd:freebsd:10.4:p3
    cpe:2.3:o:freebsd:freebsd:10.4:p3
  • cpe:2.3:o:freebsd:freebsd:10.4:p4
    cpe:2.3:o:freebsd:freebsd:10.4:p4
  • cpe:2.3:o:freebsd:freebsd:10.4:p5
    cpe:2.3:o:freebsd:freebsd:10.4:p5
  • cpe:2.3:o:freebsd:freebsd:10.4:p6
    cpe:2.3:o:freebsd:freebsd:10.4:p6
  • cpe:2.3:o:freebsd:freebsd:10.4:p7
    cpe:2.3:o:freebsd:freebsd:10.4:p7
  • cpe:2.3:o:freebsd:freebsd:10.4:p8
    cpe:2.3:o:freebsd:freebsd:10.4:p8
  • cpe:2.3:o:freebsd:freebsd:10.4:p9
    cpe:2.3:o:freebsd:freebsd:10.4:p9
  • cpe:2.3:o:freebsd:freebsd:11.1
    cpe:2.3:o:freebsd:freebsd:11.1
  • cpe:2.3:o:freebsd:freebsd:11.1:p1
    cpe:2.3:o:freebsd:freebsd:11.1:p1
  • cpe:2.3:o:freebsd:freebsd:11.1:p10
    cpe:2.3:o:freebsd:freebsd:11.1:p10
  • cpe:2.3:o:freebsd:freebsd:11.1:p11
    cpe:2.3:o:freebsd:freebsd:11.1:p11
  • cpe:2.3:o:freebsd:freebsd:11.1:p2
    cpe:2.3:o:freebsd:freebsd:11.1:p2
  • cpe:2.3:o:freebsd:freebsd:11.1:p3
    cpe:2.3:o:freebsd:freebsd:11.1:p3
  • cpe:2.3:o:freebsd:freebsd:11.1:p4
    cpe:2.3:o:freebsd:freebsd:11.1:p4
  • cpe:2.3:o:freebsd:freebsd:11.1:p5
    cpe:2.3:o:freebsd:freebsd:11.1:p5
  • cpe:2.3:o:freebsd:freebsd:11.1:p6
    cpe:2.3:o:freebsd:freebsd:11.1:p6
  • cpe:2.3:o:freebsd:freebsd:11.1:p7
    cpe:2.3:o:freebsd:freebsd:11.1:p7
  • cpe:2.3:o:freebsd:freebsd:11.1:p8
    cpe:2.3:o:freebsd:freebsd:11.1:p8
  • cpe:2.3:o:freebsd:freebsd:11.1:p9
    cpe:2.3:o:freebsd:freebsd:11.1:p9
  • cpe:2.3:o:freebsd:freebsd:11.2
    cpe:2.3:o:freebsd:freebsd:11.2
CVSS
Base: 5.0
Impact:
Exploitability:
CWE CWE-399
CAPEC
nessus via4
refmap via4
bid 105058
confirm
freebsd FreeBSD-SA-18:08
sectrack 1041425
Last major update 09-08-2018 - 14:29
Published 09-08-2018 - 14:29
Last modified 16-01-2019 - 14:30
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