Re: Multiple BIND vulnerabilities disclosed (CVE-2018-5743, CVE-2019-6467, and CVE-2019-6468)

                							

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Re: Multiple BIND vulnerabilities disclosed (CVE-2018-5743, CVE-2019-6467, and CVE-2019-6468)

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From: Peter Korsgaard &lt;peter () korsgaard com&gt;

Date: Thu, 25 Apr 2019 12:13:37 +0200

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"Michael" == Michael McNally &lt;mcnally () isc org&gt; writes:

Today ISC disclosed two vulnerabilities affecting BIND as well
as a third vulnerability which affects *only* BIND Supported Preview
Edition (a special feature-preview version of BIND provided to
ISC support customers.)

Information about the vulnerabilities can be found in the ISC Knowledge
Base:

   CVE-2018-5743: Limiting simultaneous TCP clients is ineffective
   https://kb.isc.org/docs/cve-2018-5743

   CVE-2019-6467: An error in the nxdomain redirect feature can cause
   BIND to exit with an INSIST assertion failure in query.c
   https://kb.isc.org/docs/cve-2019-6467

   CVE-2019-6468: BIND Supported Preview Edition can exit with an
   assertion failure if nxdomain-redirect is used
   https://kb.isc.org/docs/cve-2019-6468

New releases of BIND have been issued to fix the vulnerabilities above.
They may be downloaded from the ISC website:  https://www.isc.org/downloads

   -  9.11.6-P1
   -  9.12.4-P1
   -  9.14.1

It is a bit unfortunate that these security fixes now use
isc_atomic_xadd() which are not available on all architectures:

.libs/client.o: In function `mark_tcp_active':
client.c:(.text+0xc7c): undefined reference to `isc_atomic_xadd'
client.c:(.text+0xca0): undefined reference to `isc_atomic_xadd'
.libs/client.o: In function `client_accept':
client.c:(.text+0x2210): undefined reference to `isc_atomic_xadd'
client.c:(.text+0x230c): undefined reference to `isc_atomic_xadd'
.libs/client.o: In function `exit_check':
client.c:(.text+0x2958): undefined reference to `isc_atomic_xadd'
.libs/client.o:client.c:(.text+0x5cb4): more undefined references to `isc_atomic_xadd' follow
collect2: error: ld returned 1 exit status

:/

-- 
Bye, Peter Korsgaard

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Current thread:

Multiple BIND vulnerabilities disclosed (CVE-2018-5743, CVE-2019-6467, and CVE-2019-6468) Michael McNally (Apr 24)

Re: Multiple BIND vulnerabilities disclosed (CVE-2018-5743, CVE-2019-6467, and CVE-2019-6468) Peter Korsgaard (Apr 25)

Re: Multiple BIND vulnerabilities disclosed (CVE-2018-5743, CVE-2019-6467, and CVE-2019-6468) andreas (Apr 27)

Re: Multiple BIND vulnerabilities disclosed (CVE-2018-5743, CVE-2019-6467, and CVE-2019-6468) Peter Korsgaard (Apr 27)
Re: Multiple BIND vulnerabilities disclosed (CVE-2018-5743, CVE-2019-6467, and CVE-2019-6468) andreas (Apr 27)

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