What is the CVSS score of CVE-2020-3812?

CVE-2020-3812 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.4%.

Is there a public PoC exploit available for CVE-2020-3812?

Yes, a public proof-of-concept exploit is available for CVE-2020-3812. Prioritise patching immediately. EPSS: 0.4%.

Netqmail CVE-2020-3812

MEDIUM

Improper Privilege Management (CWE-269)

2020-05-26 security@debian.org

Privilege Escalation Information Disclosure Netqmail Debian Linux Ubuntu Linux

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

CVE Published

May 26, 2020 - 13:15 nvd

MEDIUM 5.5

DescriptionNVD

qmail-verify as used in netqmail 1.06 is prone to an information disclosure vulnerability. A local attacker can test for the existence of files and directories anywhere in the filesystem because qmail-verify runs as root and tests for the existence of files in the attacker's home directory, without dropping its privileges first.

AnalysisAI

qmail-verify as used in netqmail 1.06 is prone to an information disclosure vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Improper Privilege Management (CWE-269), which allows attackers to escalate privileges to gain unauthorized elevated access. qmail-verify as used in netqmail 1.06 is prone to an information disclosure vulnerability. A local attacker can test for the existence of files and directories anywhere in the filesystem because qmail-verify runs as root and tests for the existence of files in the attacker's home directory, without dropping its privileges first. Affected products include: Netqmail, Debian Debian Linux, Canonical Ubuntu Linux.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply principle of least privilege, validate privilege transitions, implement proper role separation.