8.1

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2022-43607

CVE-2022-43607: Open Babel has out-of-bounds write in MOL2 attribute/value parser

An out-of-bounds write vulnerability exists in the MOL2 format attribute and value 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.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2022-43607

CVE-2022-43607:

8.1

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

SSVC / BOD 26-04 ↗

Exploitation pocAutomatable NoTech Impact Total

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

Technical Details

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Root Cause Analysis

The vulnerability is a stack-based buffer overflow within the MOL2 file format parser of Open Babel. The root cause is an unbounded sscanf call in the OpenBabel::MOL2Format::ReadMolecule function. When parsing a specially crafted MOL2 file containing an overly long attribute or value in a comment line, this function would write past the allocated buffer on the stack. This could lead to a crash and is a potential vector for arbitrary code execution. The provided patch confirms this analysis by adding width specifiers to the sscanf format string, thereby limiting the amount of data written to the buffer and mitigating the overflow. The vulnerability is only triggered when the -c input option is enabled, which directs the parser to handle UCSF Dock-style comments where the vulnerability lies.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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