#VU78930 Incorrect default permissions in Cargo - CVE-2023-38497

Vulnerability identifier: #VU78930

Vulnerability risk: Low

CVSSv4.0: 7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2023-38497

CWE-ID: CWE-276

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Cargo

Vendor: The Rust Programming Language

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to Cargo does not respect the umask when extracting crate archives on UNIX-like systems. A local user can change the source code compiled and executed by the current user.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cargo: homu-tmp - 0.72.1

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External links
https://github.com/rust-lang/cargo/security/advisories/GHSA-j3xp-wfr4-hx87
https://github.com/rust-lang/wg-security-response/tree/main/patches/CVE-2023-38497

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.