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2018-07 Security Bulletin: SRX Series: Vulnerabilities in ISC BIND named

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Article ID: JSA10875 SECURITY_ADVISORIES Last Updated: 11 Jul 2018Version: 1.0
Product Affected:
Junos OS 12.1X46, 12.3X48, 15.1X49, 17.3, 17.4, 18.1, 18.2 on SRX Series
Problem:

Multiple vulnerabilities are addressed in the ISC BIND software included with Junos for SRX Series devices.

These issues only affects SRX devices where DNS proxy service has been configured under the [system services dns dns-proxy] stanza. This service is not enabled by default.

These issues do not affect other Junos OS based devices as they do not have BIND DNS server feature.

Juniper SIRT is not aware of any malicious exploitation of these issues.

CVE CVSS Summary
CVE-2017-3145 7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) Improper fetch cleanup sequencing in the resolver can cause named to crash
CVE-2017-3143 7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N) An error in TSIG handling can permit unauthorized dynamic updates
CVE-2017-3142 5.3 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) An error in TSIG handling can permit unauthorized zone transfers
CVE-2017-3138 6.5 (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) named exits with a REQUIRE assertion failure if it receives a null command string on its control channel
Solution:

The following software releases have been updated to resolve this specific issue:12.1X46-D76, 12.3X48-D70, 15.1X49-D140, 17.4R2 (pending release), 18.1R2, 18.2R1, and all subsequent releases.

Junos OS 18.2X75-D5 and subsequent releases also contain the updated ISC BIND libraries, however these releases are unaffected.

A service release (SR) for 17.3 on SRX is pending.

These issues are being tracked as PR 1343613 which is visible on the Customer Support website.

Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).

Workaround:

There are no viable workarounds for these issues.

Implementation:
Software Releases, patches and updates are available at https://www.juniper.net/support/downloads/.
Modification History:
2018-07-11: Initial Publication.
CVSS Score:
7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Severity Level:
High
Severity Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

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