41 lines
1.4 KiB
Diff
41 lines
1.4 KiB
Diff
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Fix CVE-2017-14502:
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14502
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=573
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Patch copied from upstream source repository:
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https://github.com/libarchive/libarchive/commit/5562545b5562f6d12a4ef991fae158bf4ccf92b6
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From 5562545b5562f6d12a4ef991fae158bf4ccf92b6 Mon Sep 17 00:00:00 2001
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From: Joerg Sonnenberger <joerg@bec.de>
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Date: Sat, 9 Sep 2017 17:47:32 +0200
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Subject: [PATCH] Avoid a read off-by-one error for UTF16 names in RAR
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archives.
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Reported-By: OSS-Fuzz issue 573
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---
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libarchive/archive_read_support_format_rar.c | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/libarchive/archive_read_support_format_rar.c b/libarchive/archive_read_support_format_rar.c
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index cbb14c32..751de697 100644
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--- a/libarchive/archive_read_support_format_rar.c
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+++ b/libarchive/archive_read_support_format_rar.c
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@@ -1496,7 +1496,11 @@ read_header(struct archive_read *a, struct archive_entry *entry,
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return (ARCHIVE_FATAL);
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}
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filename[filename_size++] = '\0';
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- filename[filename_size++] = '\0';
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+ /*
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+ * Do not increment filename_size here as the computations below
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+ * add the space for the terminating NUL explicitly.
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+ */
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+ filename[filename_size] = '\0';
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/* Decoded unicode form is UTF-16BE, so we have to update a string
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* conversion object for it. */
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--
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2.15.1
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