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CVE-2021-29495

Date: May 7, 2021

Nim is a statically typed compiled systems programming language. In Nim standard library before 1.4.2, httpClient SSL/TLS certificate verification was disabled by default. Users can upgrade to version 1.4.2 to receive a patch or, as a workaround, set "verifyMode = CVerifyPeer" as documented.

Severity Score

Related Resources (5)

https://people.canonical.com/~ubuntu-security/cve/CVE-2021-29495
https://github.com/nim-lang/security/security/advisories/GHSA-9vqv-2jj9-7mqr
https://nvd.nist.gov/vuln/detail/CVE-2021-29495
https://security-tracker.debian.org/tracker/CVE-2021-29495
https://www.mend.io/vulnerability-database/CVE-2021-29495

Severity Score

Weakness Type (CWE)

Improper Certificate Validation

CWE-295

CVSS v3.1

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

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