What is the CVSS score of CVE-2023-46363?

CVE-2023-46363 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.3%.

Is there a public PoC exploit available for CVE-2023-46363?

Yes, a public proof-of-concept exploit is available for CVE-2023-46363. Prioritise patching immediately. EPSS: 0.3%.

Jbig2Enc CVE-2023-46363

MEDIUM

Classic Buffer Overflow (CWE-120)

2023-11-08 cve@mitre.org

Buffer Overflow Jbig2Enc

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Nov 08, 2023 - 21:15 nvd

MEDIUM 5.5

DescriptionNVD

jbig2enc v0.28 was discovered to contain a SEGV via jbig2_add_page in src/jbig2enc.cc:512.

AnalysisAI

jbig2enc v0.28 was discovered to contain a SEGV via jbig2_add_page in src/jbig2enc.cc:512. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. jbig2enc v0.28 was discovered to contain a SEGV via jbig2_add_page in src/jbig2enc.cc:512. Affected products include: Jbig2Enc Project Jbig2Enc.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.