git2-rs fails to verify SSH keys by default(CVE-2023-22742)

概要

git2-rs fails to verify SSH keys by default

原文の説明

取得元が公開している説明をそのまま載せています (多くは英語)。

The git2 and libgit2-sys crates are Rust wrappers around the libgit2 C library. It was discovered that libgit2 1.5.0 and below did not verify SSH host keys when establishing an SSH connection, exposing users of the library to Man-In-the-Middle attacks.

The libgit2 team assigned CVE-2023-22742 to this vulnerability. The following versions of the libgit2-sys Rust crate have been released:

libgit2-sys 0.14.2, updating the underlying libgit2 C library to version 1.5.1.
libgit2-sys 0.13.5, updating the underlying libgit2 C library to version 1.4.5.

A new git2 crate version has also been released, 0.16.1. This version only bumps its libgit2-sys dependency to ensure no vulnerable libgit2-sys versions are used, but contains no code changes: if you update the libgit2-sys version there is no need to also update the git2 crate version.

You can learn more about this vulnerability in libgit2's advisory

出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

影響パッケージ

crates.io libgit2-sys

[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.13.5"}]}]

crates.io git2

[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.16.1"}]}]

ディストリビューション別の修正状況

各ディストリビューションが公開している、この CVE の修正パッケージ

Debian DEBIAN-CVE-2023-22742 libgit2 修正版: 1.1.0+dfsg.1-4+deb11u1
Ubuntu UBUNTU-CVE-2023-22742 libgit2 修正版: 0.24.1-2ubuntu0.2+esm2

参照URL

advisory nvd.nist.gov
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package github.com
web rustsec.org
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