Bug 42748

Summary:	bind9: Denial of service (ES 3.3)
Product:	UCS	Reporter:	Arvid Requate <requate>
Component:	Security updates	Assignee:	UCS maintainers <ucs-maintainers>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	normal
Priority:	P5	CC:	gohmann, sieverdingbeck
Version:	UCS 3.3	Flags:	requate: Patch_Available+
Target Milestone:	---
Hardware:	Other
OS:	Linux
What kind of report is it?:	Security Issue	What type of bug is this?:	---
Who will be affected by this bug?:	---	How will those affected feel about the bug?:	---
User Pain:		Enterprise Customer affected?:
School Customer affected?:		ISV affected?:
Waiting Support:		Flags outvoted (downgraded) after PO Review:
Ticket number:		Bug group (optional):	Security
Max CVSS v3 score:	7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Bug Depends on:	42747
Bug Blocks:	42749

Description Arvid Requate

2016-10-24 13:35:13 CEST

+++ This bug was initially created as a clone of Bug #42747 +++

Upstream Debian package version 1:9.8.4.dfsg.P1-6+nmu2+deb7u12 fixes this issue:

* ISC BIND 9.1.0 through 9.8.4-P2 and 9.9.0 through 9.9.2-P2 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via malformed options data in an OPT resource record. (CVE-2016-2848)

Comment 1 Arvid Requate

2017-02-16 16:22:02 CET

Upstream Debian package version 1:9.8.4.dfsg.P1-6+nmu2+deb7u13 fixes

* remote attackers could cause a denial of service (assertion failure and
  daemon exit) via a DNAME record in the answer section of a response to a
  recursive query, related to db.c and resolver.c. (CVE-2016-8864)


Upstream Debian package version 1:9.8.4.dfsg.P1-6+nmu2+deb7u14 fixes

* A crafted upstream response to an ANY query could cause an assertion
  failure (CVE-2016-9131)
* A crafted upstream response with self-contradicting DNSSEC data could cause
  an assertion failure (CVE-2016-9147)
* Specially-crafted upstream responses with a DS record could cause an
  assertion failure (CVE-2016-9444)
* A regression in the patch for CVE-2016-8864 has been fixed.

Comment 2 Arvid Requate

2017-06-01 17:21:22 CEST

Upstream Debian package version 1:9.8.4.dfsg.P1-6+nmu2+deb7u15 fixes this issue:

* Assertion failure when using DNS64 and RPZ can lead to crash (CVE-2017-3135)

Comment 3 Arvid Requate

2017-06-01 17:21:41 CEST

Upstream Debian package version 1:9.8.4.dfsg.P1-6+nmu2+deb7u16 fixes

* An error handling synthesized records could cause an assertion failure when using DNS64 with "break-dnssec yes;" (CVE-2017-3136)

* A response packet can cause a resolver to terminate when processing an answer containing a CNAME or DNAME (CVE-2017-3137)

* named exits with a REQUIRE assertion failure if it receives a null command string on its control channel (CVE-2017-3138)

Comment 4 Stefan Gohmann

2019-01-03 07:11:14 CET

This issue has been filled against UCS 3.3. The maintenance with bug and security fixes for UCS 3.3 has ended on 31st of December 2016.

Customers still on UCS 3.3 are encouraged to update to UCS 4.3. Please contact
your partner or Univention for any questions.

If this issue still occurs in newer UCS versions, please use "Clone this bug" or simply reopen the issue. In this case please provide detailed information on how this issue is affecting you.