31 lines
942 B
Diff
31 lines
942 B
Diff
From: Helmut Grohne <helmut@subdivi.de>
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Date: Sat, 11 Nov 2023 18:18:40 +0100
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Subject: hcom: validate dictsize
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Bug: https://sourceforge.net/p/sox/bugs/350/
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Bug: https://sourceforge.net/p/sox/bugs/352/
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Bug-Debian: https://bugs.debian.org/1021133
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Bug-Debian: https://bugs.debian.org/1021134
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This patch fixes both CVE-2021-23159 and CVE-2021-23172.
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---
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src/hcom.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/src/hcom.c b/src/hcom.c
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index 84643a2..7e3bd1a 100644
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--- a/src/hcom.c
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+++ b/src/hcom.c
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@@ -141,6 +141,11 @@ static int startread(sox_format_t * ft)
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return (SOX_EOF);
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}
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lsx_readw(ft, &dictsize);
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+ if (dictsize == 0 || dictsize > 511)
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+ {
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+ lsx_fail_errno(ft, SOX_EHDR, "Implausible dictionary size in HCOM header");
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+ return SOX_EOF;
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+ }
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/* Translate to sox parameters */
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ft->encoding.encoding = SOX_ENCODING_HCOM;
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