Vulnerability CVE-2019-19794
Published: 2019-12-13

Description:
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.

Type:

CWE-338

 (Use of Cryptographically Weak PRNG)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Miekg-dns prject -> Miekg-dns 

 References:
https://github.com/coredns/coredns/issues/3519
https://github.com/coredns/coredns/issues/3547
https://github.com/miekg/dns/compare/v1.1.24...v1.1.25
https://github.com/miekg/dns/issues/1043
https://github.com/miekg/dns/pull/1044
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