What is the CVSS score of CVE-2020-16117?

CVE-2020-16117 has a CVSS 3.1 base score of 5.9 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 2.1%.

Is there a public PoC exploit available for CVE-2020-16117?

Yes, a public proof-of-concept exploit is available for CVE-2020-16117. Prioritise patching immediately. EPSS: 2.1%.

Is there a patch available for CVE-2020-16117?

Yes, a patch is available for CVE-2020-16117. Update the affected software to the latest version immediately.

Evolution Data Server CVE-2020-16117

MEDIUM

NULL Pointer Dereference (CWE-476)

2020-07-29 cve@mitre.org

Null Pointer Dereference Denial Of Service Evolution Data Server Debian Linux

5.9

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.9 MEDIUM

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Jul 29, 2020 - 18:15 nvd

MEDIUM 5.9

DescriptionNVD

In GNOME evolution-data-server before 3.35.91, a malicious server can crash the mail client with a NULL pointer dereference by sending an invalid (e.g., minimal) CAPABILITY line on a connection attempt. This is related to imapx_free_capability and imapx_connect_to_server.

AnalysisAI

In GNOME evolution-data-server before 3.35.91, a malicious server can crash the mail client with a NULL pointer dereference by sending an invalid (e.g., minimal) CAPABILITY line on a connection. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. Public exploit code available.

Technical ContextAI

This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. In GNOME evolution-data-server before 3.35.91, a malicious server can crash the mail client with a NULL pointer dereference by sending an invalid (e.g., minimal) CAPABILITY line on a connection attempt. This is related to imapx_free_capability and imapx_connect_to_server. Affected products include: Gnome Evolution-Data-Server, Debian Debian Linux. Version information: before 3.35.91.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.