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Allocation of Resources Without Limits or Throttling Affecting kernel-uek-debug package, versions <0:2.6.39-400.312.2.el5uek

Severity

0.0
high
0
10

    Threat Intelligence

    EPSS
    97.39% (100th percentile)

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  • Snyk ID SNYK-ORACLE5-KERNELUEKDEBUG-2545779
  • published 10 Apr 2022
  • disclosed 19 Jun 2019
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Introduced: 19 Jun 2019

CVE-2019-11479 Open this link in a new tab
CWE-770 Open this link in a new tab

How to fix?

Upgrade Oracle:5 kernel-uek-debug to version 0:2.6.39-400.312.2.el5uek or higher.
This issue was patched in ELSA-2019-4689.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug package and not the kernel-uek-debug package as distributed by Oracle. See How to fix? for Oracle:5 relevant fixed versions and status.

Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363.

References

CVSS Scores

version 3.1
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Snyk

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

7.5 high
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SUSE

7.5 high
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Red Hat

5.3 medium