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CVE-2019-19794

Good to know:

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Date: December 13, 2019

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.

Language: Go

Severity Score

Related Resources (12)

https://github.com/coredns/coredns/issues/3547
https://github.com/miekg/dns/commit/8ebf2e419df7857ac8919baa05248789a8ffbf33
https://github.com/miekg/dns/pull/1044
https://pkg.go.dev/vuln/GO-2020-0008
https://github.com/miekg/dns/compare/v1.1.24...v1.1.25
https://github.com/coredns/coredns/security/advisories/GHSA-gv9j-4w24-q7vx
https://github.com/miekg/dns/issues/1043
https://github.com/coredns/coredns/issues/3519
https://github.com/miekg/dns/issues/1037
github.com/coredns/coredns
https://nvd.nist.gov/vuln/detail/CVE-2019-19794
https://www.mend.io/vulnerability-database/CVE-2019-19794

Severity Score

Weakness Type (CWE)

Use of Insufficiently Random Values

CWE-330

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

CWE-338

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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