Denial of service in Tokio Tls



Published: 2020-07-13
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID N/A
CWE-ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Tokio Tls
Other software / Other software solutions

Vendor tokio-rs

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU29697

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when the affected software does not call "process_new_packets" immediately after "read", so the expected termination condition "wants_read" always returns true. A remote attacker can trigger memory corruption and cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Tokio Tls: 0.12

External links

http://rustsec.org/advisories/RUSTSEC-2020-0019.html
http://github.com/tokio-rs/tls/pull/14


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.



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