Bug 1786761 (CVE-2019-19794) - CVE-2019-19794 golang-github-miekg-dns: predictable TXID can lead to response forgeries
Summary: CVE-2019-19794 golang-github-miekg-dns: predictable TXID can lead to response...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2019-19794
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1786762 1786763
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-12-27 18:42 UTC by Guilherme de Almeida Suckevicz
Modified: 2019-12-27 20:09 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2019-12-27 20:09:31 UTC


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Description Guilherme de Almeida Suckevicz 2019-12-27 18:42:18 UTC
The miekg Go DNS package before 1.1.25, as used in CoreDNS before 1.6.6 and other products, improperly generates random numbers because math/rand is used. The TXID becomes predictable, leading to response forgeries.

Reference:
https://github.com/miekg/dns/issues/1043

Upstream commit:
https://github.com/miekg/dns/pull/1044

Comment 1 Guilherme de Almeida Suckevicz 2019-12-27 18:43:35 UTC
Created golang-github-miekg-dns tracking bugs for this issue:

Affects: epel-6 [bug 1786763]
Affects: fedora-all [bug 1786762]

Comment 2 Product Security DevOps Team 2019-12-27 20:09:31 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.


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