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CVE-2019-16791

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Date: January 21, 2020

In postfix-mta-sts-resolver before 0.5.1, All users can receive incorrect response from daemon under rare conditions, rendering downgrade of effective STS policy. Converted from WS-2019-0364, on 2022-11-08.

Language: Python

Severity Score

Related Resources (7)

https://github.com/Snawoot/postfix-mta-sts-resolver/security/advisories/GHSA-h92m-42h4-82f6
https://github.com/advisories/GHSA-h92m-42h4-82f6
https://github.com/pypa/advisory-database/tree/main/vulns/postfix-mta-sts-resolver/PYSEC-2020-174.yaml
https://gist.github.com/Snawoot/b9da85d6b26dea5460673b29df1adc6b
https://github.com/Snawoot/postfix-mta-sts-resolver
https://nvd.nist.gov/vuln/detail/CVE-2019-16791
https://www.mend.io/vulnerability-database/CVE-2019-16791

Severity Score

Weakness Type (CWE)

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-362

Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')

CWE-757

Top Fix

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Upgrade to version postfix-mta-sts-resolver - 0.5.1

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): HIGH
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): HIGH
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): NONE
Availability (A): PARTIAL
Additional information:

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