What is the CVSS score of CVE-2021-33480?

CVE-2021-33480 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: 1.0%.

Is there a public PoC exploit available for CVE-2021-33480?

Yes, a public proof-of-concept exploit is available for CVE-2021-33480. Prioritise patching immediately. EPSS: 1.0%.

Optical Character Recognition CVE-2021-33480

MEDIUM

Use After Free (CWE-416)

2021-11-17 patrick@puiterwijk.org

Use After Free Memory Corruption Information Disclosure Optical Character Recognition

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 17, 2021 - 18:15 nvd

MEDIUM 5.5

DescriptionNVD

An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in context_correction() in pgm2asc.c.

AnalysisAI

An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in context_correction() in pgm2asc.c. 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 Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in context_correction() in pgm2asc.c. Affected products include: Optical Character Recognition Project Optical Character Recognition. Version information: through 0.53.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.