9.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2023-26966

CVE-2023-26966: libtiff 4.5.0 is vulnerable to Buffer Overflow in uv_encode() when libtiff reads a corrupted...

libtiff 4.5.0 is vulnerable to Buffer Overflow in uv_encode() when libtiff reads a corrupted little-endian TIFF file and specifies the output to be big-endian.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2023-26966

CVE-2023-26966:

9.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

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Root Cause Analysis

The vulnerability is explicitly attributed to the uv_encode() function in CVE-2023-26966 descriptions and the associated GitLab Merge Request !473. The MR title 'tif_luv: Check and correct for NaN data in uv_encode()' confirms the function and the nature of the flaw (NaN data handling). The file path libtiff/tif_luv.c is standard for this libtiff module, as confirmed by checking the libtiff GitLab repository structure. Attempts to fetch direct commit diffs via tools were unsuccessful for the GitLab source, so the analysis relies on these strong descriptive indicators. The confidence in identifying uv_encode as the vulnerable function is high due to these direct mentions in official vulnerability reports and merge request details specifically addressing the CVE and the function name within the relevant file (tif_luv.c).

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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