5.5

CVSS Score

3.1

-

CVSS Score

Basic Information

CVE ID

CVE-2020-35919

GHSA ID

GHSA-c79c-gwph-gqfm

EPSS Score

0.1703%

CWE

Published

5/24/2022

Updated

6/14/2023

KEV Status

Technology

Rust

Basic Information

CVE ID

GHSA ID

EPSS Score

CWE

Published

Updated

KEV Status

Technology

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CVE-2020-35919

CVE-2020-35919: `net2` invalidly assumes the memory layout of std::net::SocketAddr

The net2 crate has assumed std::net::SocketAddrV4 and std::net::SocketAddrV6 have the same memory layout as the system C representation sockaddr. It has simply casted the pointers to convert the socket addresses to the system representation. The standard library does not say anything about the memory layout, and this will cause invalid memory access if the standard library changes the implementation. No warnings or errors will be emitted once the change happens.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2020-35919

CVE-2020-35919:

5.5

CVSS Score

3.1

-

CVSS Score

Basic Information

CVE ID

CVE-2020-35919

GHSA ID

GHSA-c79c-gwph-gqfm

EPSS Score

0.1703%

CWE

Published

5/24/2022

Updated

6/14/2023

KEV Status

Technology

Rust

Basic Information

CVE ID

GHSA ID

EPSS Score

CWE

Published

Updated

KEV Status

Technology

Technical Details

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
net2	rust	< 0.2.36	0.2.36

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stems from unsafe pointer casting between Rust's SocketAddr types and C sockaddr structures. Both functions:

addr2raw: Casts SocketAddrV4/V6 references directly to sockaddr pointers using 'as' casting
raw2addr: Reconstructs SocketAddr from raw sockaddr_storage via pointer casts These operations violate Rust's safety guarantees about type layout stability. The GitHub issue #105 explicitly shows these functions contain the problematic code patterns, and similar vulnerabilities were patched in related crates (mio, socket2) by removing such assumptions.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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5.5

-

Basic Information

Basic Information

Concerned about an active attack path?

CVE-2020-35919: `net2` invalidly assumes the memory layout of std::net::SocketAddr

CVE-2020-35919:

5.5

-

Basic Information

Basic Information

Technical Details

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Vulnerability IntelligenceMiggo AI

CVE-2020-35919: `net2` invalidly assumes the memory layout of std::net::SocketAddr

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Basic Information

Basic Information

Technical Details

5.5

5.5

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI