What is the CVSS score of CVE-2020-35857?

CVE-2020-35857 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 1.4%.

Is there a public PoC exploit available for CVE-2020-35857?

Yes, a public proof-of-concept exploit is available for CVE-2020-35857. Prioritise patching immediately. EPSS: 1.4%.

Is there a patch available for CVE-2020-35857?

Yes, a patch is available for CVE-2020-35857. Update the affected software to the latest version immediately.

Trust Dns Server CVE-2020-35857

HIGH

Uncontrolled Resource Consumption (CWE-400)

2020-12-31 cve@mitre.org

Denial Of Service Trust Dns Server

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Dec 31, 2020 - 10:15 nvd

HIGH 7.5

DescriptionNVD

An issue was discovered in the trust-dns-server crate before 0.18.1 for Rust. DNS MX and SRV null targets are mishandled, causing stack consumption.

AnalysisAI

An issue was discovered in the trust-dns-server crate before 0.18.1 for Rust. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Uncontrolled Resource Consumption (CWE-400), which allows attackers to cause denial of service by exhausting system resources. An issue was discovered in the trust-dns-server crate before 0.18.1 for Rust. DNS MX and SRV null targets are mishandled, causing stack consumption. Affected products include: Trust-Dns-Server Project Trust-Dns-Server. Version information: before 0.18.1.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement rate limiting, set resource quotas, validate input sizes, use timeouts.