File _patchinfo of Package patchinfo.4592

<patchinfo incident="4592">
  <issue id="987866" tracker="bnc">VUL-1: CVE-2016-6170: bind: malicious primary DNS servers can crash secondaries</issue>
  <issue id="989528" tracker="bnc">VUL-1: CVE-2016-2775: bind: lwresd: A query name which is too long can cause a segmentation fault</issue>
  <issue id="1020983" tracker="bnc">root umask 077 screws up the /etc/init.d/named init script</issue>
  <issue id="1033468" tracker="bnc">EMU: VUL-0: EMBARGOED: CVE-2017-3138: bind: named exits with a REQUIRE assertion failure if it receives a null command string on its control channel</issue>
  <issue id="1033466" tracker="bnc">EMU: VUL-0: EMBARGOED: CVE-2017-3136: bind: synthesized records could cause assertion failure when using DNS64 with "break-dnssec yes;"</issue>
  <issue id="1033467" tracker="bnc">EMU: VUL-0: EMBARGOED: CVE-2017-3137: bind: response packet can cause a resolver to terminate when processing answers containing CNAME or DNAME</issue>
  <issue id="2017-3137" tracker="cve" />
  <issue id="2017-3136" tracker="cve" />
  <issue id="2016-6170" tracker="cve" />
  <issue id="2016-2775" tracker="cve" />
  <issue id="2017-3138" tracker="cve" />
  <category>security</category>
  <rating>important</rating>
  <packager>nkukreja</packager>
  <description>
This update for bind fixes the following issues:

CVE-2017-3137 (bsc#1033467):
Mistaken assumptions about the ordering of records in the answer
section of a response containing CNAME or DNAME resource records
could have been exploited to cause a denial of service of a bind
server performing recursion.

CVE-2017-3136 (bsc#1033466):
An attacker could have constructed a query that would cause a denial
of service of servers configured to use DNS64.

CVE-2017-3138 (bsc#1033468):
An attacker with access to the BIND control channel could have caused
the server to stop by triggering an assertion failure.

CVE-2016-6170 (bsc#987866):
Primary DNS servers could have caused a denial of service of secondary DNS servers via a large AXFR response.
IXFR servers could have caused a denial of service of IXFR clients via a large IXFR response.
Remote authenticated users could have caused a denial of service of primary DNS servers via a large UPDATE message.

CVE-2016-2775 (bsc#989528):
When lwresd or the named lwres option were enabled, bind allowed remote attackers to cause a denial of service 
(daemon crash) via a long request that uses the lightweight resolver protocol.

One additional non-security bug was fixed:

The default umask was changed to 077. (bsc#1020983)

</description>
  <summary>Security update for bind</summary>
</patchinfo>