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CVE-2023-22742

Date: January 20, 2023

libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of libgit2 require the caller to set the "certificate_check" field of libgit2's "git_remote_callbacks" structure - if a certificate check callback is not set, libgit2 does not perform any certificate checking. This means that by default - without configuring a certificate check callback, clients will not perform validation on the server SSH keys and may be subject to a man-in-the-middle attack. Users are encouraged to upgrade to v1.4.5 or v1.5.1. Users unable to upgrade should ensure that all relevant certificates are manually checked.

Language: RUST

Severity Score

5.3

Related Resources (16)

Url: https://github.com/libgit2/libgit2/releases/tag/v1.5.1

Url: https://github.com/rust-lang/git2-rs/security/advisories/GHSA-m4ch-rfv5-x5g3

Url: https://security-tracker.debian.org/tracker/CVE-2023-22742

Url: https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea

Url: https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56

Url: https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq

Url: https://github.com/rust-lang/git2-rs

Url: https://access.redhat.com/security/cve/CVE-2023-22742

Url: https://nvd.nist.gov/vuln/detail/CVE-2023-22742

Url: http://www.openwall.com/lists/oss-security/2023/11/06/5

Url: https://crates.io/crates/libgit2-sys

Url: https://rustsec.org/advisories/RUSTSEC-2023-0003.html

Url: https://www.libssh2.org

Url: https://github.com/libgit2/libgit2/releases/tag/v1.4.5

Url: https://github.com/rust-lang/git2-rs/commit/87934f87d36753ed702792ec063be7246444a8e1

Url: https://www.mend.io/vulnerability-database/CVE-2023-22742

Severity Score

5.3

Weakness Type (CWE)

Improper Verification of Cryptographic Signature

CWE-347

CVSS v3.1

Base Score:	5.3
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	HIGH
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	HIGH
Availability (A):	NONE

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CVE-2023-22742

Date: January 20, 2023

Language: RUST

Severity Score

Related Resources (16)

Severity Score

Weakness Type (CWE)

CVSS v3.1

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