!45 fix CVE-2023-52890
From: @kylin-qiaojijun Reviewed-by: @wk333 Signed-off-by: @wk333
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commit
8e534f4ee3
37
3000-CVE-2023-52890.patch
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37
3000-CVE-2023-52890.patch
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From 75dcdc2cf37478fad6c0e3427403d198b554951d Mon Sep 17 00:00:00 2001
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From: Erik Larsson <erik@tuxera.com>
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Date: Tue, 13 Jun 2023 17:47:15 +0300
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Subject: [PATCH] unistr.c: Fix use-after-free in 'ntfs_uppercase_mbs'.
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If 'utf8_to_unicode' throws an error due to an invalid UTF-8 sequence,
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then 'n' will be less than 0 and the loop will terminate without storing
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anything in '*t'. After the loop the uppercase string's allocation is
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freed, however after it is freed it is unconditionally accessed through
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'*t', which points into the freed allocation, for the purpose of NULL-
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terminating the string. This leads to a use-after-free.
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Fixed by only NULL-terminating the string when no error has been thrown.
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Thanks for Jeffrey Bencteux for reporting this issue:
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https://github.com/tuxera/ntfs-3g/issues/84
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---
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libntfs-3g/unistr.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/libntfs-3g/unistr.c b/libntfs-3g/unistr.c
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index 5854b3b7..db8ddf42 100644
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--- a/libntfs-3g/unistr.c
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+++ b/libntfs-3g/unistr.c
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@@ -1189,8 +1189,9 @@ char *ntfs_uppercase_mbs(const char *low,
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free(upp);
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upp = (char*)NULL;
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errno = EILSEQ;
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+ } else {
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+ *t = 0;
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}
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- *t = 0;
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}
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return (upp);
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}
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--
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2.20.1
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@ -1,6 +1,6 @@
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Name: ntfs-3g
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Version: 2022.5.17
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Release: 2
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Release: 3
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Epoch: 2
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Summary: Linux NTFS userspace driver
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License: GPLv2+
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@ -11,6 +11,8 @@ Patch1: add-version-and-help-usage.patch
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Patch2: CVE-2022-40284_1.patch
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Patch3: CVE-2022-40284_2.patch
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Patch3000: 3000-CVE-2023-52890.patch
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BuildRequires: libtool, libattr-devel, libconfig-devel, libgcrypt-devel, gnutls-devel, libuuid-devel
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Provides: ntfsprogs-fuse = %{epoch}:%{version}-%{release}
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Obsoletes: ntfsprogs-fuse
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@ -91,6 +93,9 @@ rm -rf $RPM_BUILD_ROOT%{_defaultdocdir}/%{name}/README
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%{_mandir}/man*/*
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%changelog
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* Mon Jun 17 2024 qiaojijun<qiaojijun@kylinos.cn> - 2:2022.5.17-3
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- fix CVE-2023-52890
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* Thu Nov 10 2022 liyuxiang<liyuxiang@ncti-gba.cn> - 2:2022.5.17-2
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- fix CVE-2022-40284
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