Vulnerability identifier: #VU30986

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-1010299

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Rust Programming Language
Universal components / Libraries / Programming Languages & Components

Vendor: Rust Team

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The Rust Programming Language Standard Library 1.18.0 and later is affected by: CWE-200: Information Exposure. The impact is: Contents of uninitialized memory could be printed to string or to log file. The component is: Debug trait implementation for std::collections::vec_deque::Iter. The attack vector is: The program needs to invoke debug printing for iterator over an empty VecDeque. The fixed version is: 1.30.0, nightly versions after commit b85e4cc8fadaabd41da5b9645c08c68b8f89908d.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Rust Programming Language: 1.18.0 - 1.29.2

---

External links
http://github.com/rust-lang/rust/issues/53566
http://github.com/rust-lang/rust/pull/53571/commits/b85e4cc8fadaabd41da5b9645c08c68b8f89908d

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.