50 lines
1.6 KiB
Diff
50 lines
1.6 KiB
Diff
From 77c8d6426fe91a2df8f3a37934f030ecc396cacb Mon Sep 17 00:00:00 2001
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From: zhangxingrong <zhangxingrong@uniontech.com>
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Date: Fri, 12 Jul 2024 15:09:12 +0800
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Subject: [PATCH] fix for CVE-2024-33869
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Bug 707691 part 2
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See bug thread for details
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This is the second part of the fix for CVE-2024-33869
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url:https://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=f5336e5b4154f515ac83bc5b9eba94302e6618d4
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---
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base/gpmisc.c | 21 +++++++++++++++++++++
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1 file changed, 21 insertions(+)
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diff --git a/base/gpmisc.c b/base/gpmisc.c
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index cbc6139..186d9b7 100644
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--- a/base/gpmisc.c
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+++ b/base/gpmisc.c
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@@ -1089,6 +1089,27 @@ gp_validate_path_len(const gs_memory_t *mem,
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rlen = len;
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}
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else {
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+ char *test = (char *)path, *test1;
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+ uint tlen = len, slen;
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+
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+ /* Look for any pipe (%pipe% or '|' specifications between path separators
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+ * Reject any path spec which has a %pipe% or '|' anywhere except at the start.
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+ */
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+ while (tlen > 0) {
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+ if (test[0] == '|' || (tlen > 5 && memcmp(test, "%pipe", 5) == 0)) {
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+ code = gs_note_error(gs_error_invalidfileaccess);
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+ goto exit;
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+ }
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+ test1 = test;
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+ slen = search_separator((const char **)&test, path + len, test1, 1);
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+ if(slen == 0)
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+ break;
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+ test += slen;
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+ tlen -= test - test1;
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+ if (test >= path + len)
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+ break;
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+ }
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+
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rlen = len+1;
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bufferfull = (char *)gs_alloc_bytes(mem->thread_safe_memory, rlen + prefix_len, "gp_validate_path");
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if (bufferfull == NULL)
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--
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2.43.0
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