Date: Thu, 25 Apr 2019 12:13:37 +0200 From: Peter Korsgaard <peter@...sgaard.com> To: Michael McNally <mcnally@....org> Cc: oss-security@...ts.openwall.com Subject: Re: Multiple BIND vulnerabilities disclosed (CVE-2018-5743, CVE-2019-6467, and CVE-2019-6468) >>>>> "Michael" == Michael McNally <mcnally@....org> 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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