Bug 43362 – bind9: Denial of service (4.1)

Bug 43362 - bind9: Denial of service (4.1)


Summary:	bind9: Denial of service (4.1)

Status:	CLOSED FIXED

Product:	UCS
Classification:	Unclassified
Component:	Security updates
Version:	UCS 4.1
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	UCS 4.1-4-errata
Assigned To:	Philipp Hahn
QA Contact:	Arvid Requate

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2017-01-17 18:28 CET by Janek Walkenhorst
Modified:	2017-02-15 14:57 CET (History)
CC List:	2 users (show)

See Also:
What kind of report is it?:	Security Issue
What type of bug is this?:	---
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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

Flags:	requate: Patch_Available+

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Description Janek Walkenhorst

2017-01-17 18:28:33 CET

CVE-2016-9131

    A crafted upstream response to an ANY query could cause an
    assertion failure.

CVE-2016-9147

    A crafted upstream response with self-contradicting DNSSEC data
    could cause an assertion failure.

CVE-2016-9444

    Specially-crafted upstream responses with a DS record could cause
    an assertion failure.

These vulnerabilities predominantly affect DNS servers providing
recursive service.  Client queries to authoritative-only servers
cannot trigger these assertion failures.  These vulnerabilities are
present whether or not DNSSEC validation is enabled in the server
configuration.

Comment 1 Arvid Requate

2017-01-30 21:17:54 CET

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

Additionally the patch for CVE-2016-8864 (Bug 42747) seems to cause a regression. That has been fixed too.

Comment 2 Philipp Hahn

2017-02-06 12:15:39 CET

repo_admin.py -U -r 4.1 -s errata4.1-4 -d wheezy -p bind9 # 1:9.8.4.dfsg.P1-6+nmu2+deb7u14

Package: bind9
Version: 1:9.8.4.dfsg.P1-6+nmu2.126.201702061148
Branch: ucs_4.1-0
Scope: errata4.1-4

r76427 | Bug #43362,Bug #28748,#29977: bind9 YAML
 bind9.yaml

Comment 3 Arvid Requate

2017-02-14 21:22:15 CET

Verified:
* upstream version imported and built
* Univention patches applied
* package update Ok (amd64)
* Functional test Ok (deleted Samba DNS records, let samba_dnsupdate fix it)
* Advisory Ok

Comment 4 Janek Walkenhorst

2017-02-15 14:57:45 CET

<http://errata.software-univention.de/ucs/4.1/393.html>