Huawei EulerOS: Security Advisory for bind (EulerOS-SA-2019-2321)

Published: 2020-01-23 12:47:03
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:N/C:P/I:N/A:N

Summary:
The remote host is missing an update for the Huawei EulerOS 'bind' Linux Distribution Package(s) announced via the EulerOS-SA-2019-2321 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
Change #4777 (introduced in October 2017) introduced an unforeseen issue in releases which were issued after that date, affecting which clients are permitted to make recursive queries to a BIND nameserver. The intended (and documented) behavior is that if an operator has not specified a value for the 'allow-recursion' setting, it SHOULD default to one of the following: none, if 'recursion no, ' is set in named.conf, a value inherited from the 'allow-query-cache' or 'allow-query' settings IF 'recursion yes, ' (the default for that setting) AND match lists are explicitly set for 'allow-query-cache' or 'allow-query' (see the BIND9 Administrative Reference Manual section 6.2 for more details), or the intended default of 'allow-recursion {localhost, localnets, }, ' if 'recursion yes, ' is in effect and no values are explicitly set for 'allow-query-cache' or 'allow-query'. However, because of the regression introduced by change #4777, it is possible when 'recursion yes, ' is in effect and no match list values are provided for 'allow-query-cache' or 'allow-query' for the setting of 'allow-recursion' to inherit a setting of all hosts from the 'allow-query' setting default, improperly permitting recursion to all clients. Affects BIND 9.9.12, 9.10.7, 9.11.3, 9.12.0-9.12.1-P2, the development release 9.13.0, and also releases 9.9.12-S1, 9.10.7-S1, 9.11.3-S1, and 9.11.3-S2 from BIND 9 Supported Preview Edition.(CVE-2018-5738) Controls for zone transfers may not be properly applied to Dynamically Loadable Zones (DLZs) if the zones are writable Versions affected: BIND 9.9.0 - 9.10.8-P1, 9.11.0 - 9.11.5-P2, 9.12.0 - 9.12.3-P2, and versions 9.9.3-S1 - 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 - 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2019-6465.(CVE-2019-6465) 'managed-keys' is a feature which allows a BIND resolver to automatically maintain the keys used by trust anchors which operators configure for use in DNSSEC validation. Due to an error in the managed-keys feature it is possible for a BIND server which uses managed-keys to exit due to an assertion failure if, during key rollover, a trust anchor's keys are replaced with keys which use an unsupported algorithm. Versions affected: BIND 9.9.0 - 9.10.8-P1, 9.11.0 - 9.11.5-P1, 9.12.0 - 9.12.3-P1, and versions 9.9.3-S1 - 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 - 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5745.(CVE-2018-5745)

Affected Versions:
'bind' Linux Distribution Package(s) on Huawei EulerOS Virtualization for ARM 64 3.0.3.0.

Recommendations:
Please install the updated Linux Distribution Package(s).

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2018-5738
https://nvd.nist.gov/vuln/detail/CVE-2018-5745
https://nvd.nist.gov/vuln/detail/CVE-2019-6465

References:

https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-2321

Severity
Medium
CVSS Score
5.0
Published
2020-01-23
Modified
2020-01-23
Category
Huawei EulerOS Local Security Checks

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