Tesseract Ocr
CVE-2021-36081
HIGH
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Memory lifecycle management
MITRE ATT&CK
2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.8 (HIGH). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A local attacker with access to the system could access freed memory to execute arbitrary code or crash the application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
Tesseract OCR 5.0.0-alpha-20201231 has a one_ell_conflict use-after-free during a strpbrk call. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
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. Tesseract OCR 5.0.0-alpha-20201231 has a one_ell_conflict use-after-free during a strpbrk call. Affected products include: Tesseract Ocr Project Tesseract Ocr.
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Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Tesseract OCR 5.0.0-alpha-20201231 has a one_ell_conflict use-after-free during a strpbrk call.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.
Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Affected Products (CPE)NVD
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Heap out-of-bounds write and read in Tesseract OCR Engine 5.5.3 and earlier allows an attacker who can supply a crafted
Stack-based buffer overflow in Tesseract OCR 5.5.3 and earlier corrupts the stack during legacy engine initialization, e
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Heap out-of-bounds write in Tesseract OCR 5.5.3 and earlier allows an attacker who controls the loaded .traineddata mode
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Out-of-bounds write in Tesseract OCR engine version 5.5.3 and earlier allows an attacker who can supply a crafted `.trai
Denial of service in Tesseract OCR Engine 5.5.3 and earlier allows a local attacker to crash any process that loads a cr
Double free and use-after-free in the Tesseract OCR PAGE XML renderer (5.4.0 through 5.5.3) leaves the caller-owned righ
Heap out-of-bounds write in Tesseract OCR engine prior to 5.5.3 is triggered by a crafted LSTM .traineddata model file t
Heap out-of-bounds read in Tesseract OCR prior to version 5.5.3 allows an attacker who can supply a crafted .traineddata
Loading a crafted LSTM model into Tesseract OCR 5.5.3 and earlier aborts the host process on the default build configura
Exploit-DB