What is the CVSS score of CVE-2017-11189?

CVE-2017-11189 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.4%.

Is there a public PoC exploit available for CVE-2017-11189?

Yes, a public proof-of-concept exploit is available for CVE-2017-11189. Prioritise patching immediately. EPSS: 0.4%.

Unrar Free CVE-2017-11189

MEDIUM

NULL Pointer Dereference (CWE-476)

2017-07-12 cve@mitre.org

Null Pointer Dereference Denial Of Service Unrar Free

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Jul 12, 2017 - 16:29 cve.org

MEDIUM 6.5

DescriptionCVE.org

unrarlib.c in unrar-free 0.0.1 might allow remote attackers to cause a denial of service (NULL pointer dereference and application crash), which could be relevant if unrarlib is used as library code for a long-running application. NOTE: one of the several test cases in the references may be the same as what was separately reported as CVE-2017-14121.

AnalysisAI

unrarlib.c in unrar-free 0.0.1 might allow remote attackers to cause a denial of service (NULL pointer dereference and application crash), which could be relevant if unrarlib is used as library code. Rated medium severity (CVSS 6.5), 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 NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. unrarlib.c in unrar-free 0.0.1 might allow remote attackers to cause a denial of service (NULL pointer dereference and application crash), which could be relevant if unrarlib is used as library code for a long-running application. NOTE: one of the several test cases in the references may be the same as what was separately reported as CVE-2017-14121. Affected products include: Rarzilla Unrar-Free.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.