What is the CVSS score of CVE-2019-13951?

CVE-2019-13951 has a CVSS 3.0 base score of 9.8 (Critical). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.7%.

Is there a public PoC exploit available for CVE-2019-13951?

Yes, a public proof-of-concept exploit is available for CVE-2019-13951. Prioritise patching immediately. EPSS: 1.7%.

Gdnsd CVE-2019-13951

CRITICAL

Out-of-bounds Write (CWE-787)

2019-07-18 cve@mitre.org

Buffer Overflow Memory Corruption Gdnsd

9.8

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Jul 18, 2019 - 17:15 nvd

CRITICAL 9.8

DescriptionNVD

The set_ipv4() function in zscan_rfc1035.rl in gdnsd 3.x before 3.2.1 has a stack-based buffer overflow via a long and malformed IPv4 address in zone data.

AnalysisAI

The set_ipv4() function in zscan_rfc1035.rl in gdnsd 3.x before 3.2.1 has a stack-based buffer overflow via a long and malformed IPv4 address in zone data. Rated critical severity (CVSS 9.8), 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 Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. The set_ipv4() function in zscan_rfc1035.rl in gdnsd 3.x before 3.2.1 has a stack-based buffer overflow via a long and malformed IPv4 address in zone data. Affected products include: Gdnsd. Version information: before 3.2.1.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).