Information Exposure Affecting kernel-rt-kvm package, versions <0:3.10.0-327.28.3.rt56.235.el7


Severity

high

    Threat Intelligence

    EPSS
    0.45% (76th percentile)

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  • Snyk ID SNYK-CENTOS7-KERNELRTKVM-2069588
  • published 26 Jul 2021
  • disclosed 12 Jul 2016

How to fix?

Upgrade Centos:7 kernel-rt-kvm to version 0:3.10.0-327.28.3.rt56.235.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-kvm package and not the kernel-rt-kvm package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

net/ipv4/tcp_input.c in the Linux kernel before 4.7 does not properly determine the rate of challenge ACK segments, which makes it easier for remote attackers to hijack TCP sessions via a blind in-window attack.

References

CVSS Scores

version 3.1
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Snyk

4.8 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    Low
  • Availability (A)
    Low
Expand this section

NVD

4.8 medium
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Red Hat

4.8 medium