4.4

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2023-3164

CVE-2023-3164: A heap out-of-bounds read flaw was found in builtin.c in the gawk package. This issue may lead to...

A heap out-of-bounds read flaw was found in builtin.c in the gawk package. This issue may lead to a crash and could be used to read sensitive information.

(GitHub Advisory)

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CVE-2023-3164

CVE-2023-3164:

4.4

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

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Root Cause Analysis

The vulnerability description explicitly mentions 'builtin.c' and an issue with an array 'the_args' and an unsafe index 'val'. The Red Hat Bugzilla entry for CVE-2023-4156 points to a fix in gawk prior to 5.1.1 and references a ChangeLog. The gawk ChangeLog entry for 2022-08-03 specifically mentions a fix in 'builtin.c' within the 'format_tree' function related to checking for wrap-around to negative values when collecting positional field widths or precisions. This aligns with the description of an out-of-bounds read due to an unsafe index. Although the direct commit patch could not be fetched, the available information strongly points to format_tree as the vulnerable function.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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