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34 lines
1.1 KiB
34 lines
1.1 KiB
6 years ago
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From: Petr Stodulka <pstodulk@redhat.com>
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Date: Mon, 14 Sep 2015 18:23:17 +0200
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Subject: Upstream fix for heap overflow
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Bug-Debian: https://bugs.debian.org/802162
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Bug-RedHat: https://bugzilla.redhat.com/show_bug.cgi?id=1260944
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Origin: https://bugzilla.redhat.com/attachment.cgi?id=1073002
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Forwarded: yes
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---
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crypt.c | 12 +++++++++++-
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1 file changed, 11 insertions(+), 1 deletion(-)
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--- a/crypt.c
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+++ b/crypt.c
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@@ -465,7 +465,17 @@
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GLOBAL(pInfo->encrypted) = FALSE;
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defer_leftover_input(__G);
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for (n = 0; n < RAND_HEAD_LEN; n++) {
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- b = NEXTBYTE;
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+ /* 2012-11-23 SMS. (OUSPG report.)
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+ * Quit early if compressed size < HEAD_LEN. The resulting
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+ * error message ("unable to get password") could be improved,
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+ * but it's better than trying to read nonexistent data, and
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+ * then continuing with a negative G.csize. (See
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+ * fileio.c:readbyte()).
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+ */
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+ if ((b = NEXTBYTE) == (ush)EOF)
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+ {
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+ return PK_ERR;
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+ }
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h[n] = (uch)b;
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Trace((stdout, " (%02x)", h[n]));
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}
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