9.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2022-46290

CVE-2022-46290: Open Babel has out-of-bounds write in ORCA nAtoms parser (second variant)

Multiple out-of-bounds write vulnerabilities exist in the ORCA format nAtoms functionality of Open Babel 3.1.1 and master commit 530dbfa3. A specially-crafted malformed file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.The loop that stores the coordinates does not check its index against nAtoms

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2022-46290

CVE-2022-46290:

9.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

SSVC / BOD 26-04 ↗

Exploitation pocAutomatable YesTech Impact Total

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Package Name	Ecosystem	Vulnerable Versions	First Patched Version
openbabel	pip	< 3.2.0	3.2.0

Technical Details

Vulnerability Intelligence
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Root Cause Analysis

The security vulnerability is an out-of-bounds write within the ORCA file format parser in Open Babel. The analysis of the provided patch commit b239d06eb724bb684eea0040e9d87cf07072b081 pinpoints the exact location of the vulnerability. The file src/formats/orcaformat.cpp contains the ReadMolecule method belonging to the OpenBabel::ORCAFormat class. This method is responsible for parsing ORCA files. The vulnerability is triggered when a malicious ORCA file provides a deceptive value for 'Number of atoms'. For instance, if this number is smaller than the actual number of atom coordinates that follow, or if it's a negative number, the code would previously perform an out-of-bounds write to the confCoords heap buffer. The patch rectifies this by first, validating the parsed nAtoms to be within a safe range, and second, by adding a conditional check (if (confCoords != nullptr && i < nAtoms)) before writing coordinate data into the confCoords buffer. This ensures that the write operations are strictly within the allocated buffer's bounds. Therefore, the vulnerable function that would appear in a runtime profile during exploitation is OpenBabel::ORCAFormat::ReadMolecule.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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