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cloudfoundryCloud FoundryCFOUNDRY:C0E674F38966607B2B6B03C0AB944275
HistoryDec 14, 2017 - 12:00 a.m.

USN-3504-1: libxml2 vulnerability | Cloud Foundry

2017-12-1400:00:00
Cloud Foundry
www.cloudfoundry.org
38

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.011 Low

EPSS

Percentile

84.2%

Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 14.04

Description

Wei Lei discovered that libxml2 incorrecty handled certain parameter entities. An attacker could use this issue with specially constructed XML data to cause libxml2 to consume resources, leading to a denial of service.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • Cloud Foundry BOSH stemcells are vulnerable, including:
    • 3421.x versions prior to 3421.34
    • 3445.x versions prior to 3445.19
    • 3468.x versions prior to 3468.13
    • All other stemcells not listed.
  • All versions of Cloud Foundry cflinuxfs2 prior to 1.173.0

Mitigation

OSS users are strongly encouraged to follow one of the mitigations below:

  • The Cloud Foundry project recommends upgrading the following BOSH stemcells:
    • Upgrade 3421.x versions prior to 3421.34
    • Upgrade 3445.x versions prior to 3445.19
    • Upgrade 3468.x versions prior to 3468.13
    • All other stemcells should be upgraded to the latest version available on bosh.io.
  • The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs2 version 1.173.0 or later.

References

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.011 Low

EPSS

Percentile

84.2%