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Message-ID: <022292bf-7399-4a01-a770-f3eb5c92bb07@oracle.com>
Date: Fri, 20 Jun 2025 10:30:46 -0700
From: Alan Coopersmith <alan.coopersmith@...cle.com>
To: oss-security@...ts.openwall.com
Subject: ClamAV 1.4.3 and 1.0.9 security patch versions
published
https://blog.clamav.net/2025/06/clamav-143-and-109-security-patch.html
announces:
> Today, we are publishing the 1.4.3 and 1.0.9 security patch versions.
>
> [....]
>
> * CVE-2025-20260: Fixed a possible buffer overflow write bug in the PDF
> file parser that could cause a denial-of-service (DoS) condition or
> enable remote code execution.
>
> This issue only affects configurations where both:
>
> The max file-size scan limit is set greater than or equal to 1024MB.
> The max scan-size scan limit is set greater than or equal to 1025MB.
>
> The code flaw was present prior to version 1.0.0, but a change in
> version 1.0.0 that enables larger allocations based on untrusted data
> made it possible to trigger this bug.
>
> This issue affects all currently supported versions. It will be fixed in:
>
> 1.4.3
> 1.0.9
>
> Thank you to Greg Walkup at Sandia National Labs for identifying this issue.
>
>
> * CVE-2025-20234: Fixed a possible buffer overflow read bug in the UDF
> file parser that may write to a temp file and thus disclose
> information, or it may crash and cause a denial-of-service (DoS)
> condition.
>
> This issue was introduced in version 1.2.0. It will be fixed in 1.4.3.
>
> Thank you to volticks (@movx64 on Twitter/X), working with
> Trend Micro Zero Day Initiative, for identifying this issue.
>
>
> * Fixed a possible use-after-free bug in the Xz decompression module
> in the bundled lzma-sdk library.
>
> This issue was fixed in the lzma-sdk version 18.03. ClamAV bundles a
> copy of the lzma-sdk with some performance changes specific to
> libclamav, plus select bug fixes like this one in lieu of a full
> upgrade to newer lzma-sdk.
>
> This issue affects all ClamAV versions at least as far back as 0.99.4.
> It will be fixed in:
>
> 1.4.3
> 1.0.9
>
> Thank you to OSS-Fuzz for identifying this issue.
--
-Alan Coopersmith- alan.coopersmith@...cle.com
Oracle Solaris Engineering - https://blogs.oracle.com/solaris
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