58 lines
2.0 KiB
Diff
58 lines
2.0 KiB
Diff
Fix CVE-2017-11343:
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https://lists.nongnu.org/archive/html/chicken-announce/2017-07/msg00000.html
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11343
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Patch copied from upstream mailing list:
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http://lists.gnu.org/archive/html/chicken-hackers/2017-06/txtod8Pa1wGU0.txt
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From ae2633195cc5f4f61c9da4ac90f0c14c010dcc3d Mon Sep 17 00:00:00 2001
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From: Peter Bex <address@hidden>
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Date: Fri, 30 Jun 2017 15:39:45 +0200
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Subject: [PATCH 2/2] Initialize symbol table after setting up randomization
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Otherwise, the symbol table wouldn't be correctly randomized.
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---
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NEWS | 3 +++
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runtime.c | 2 +-
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2 files changed, 4 insertions(+), 1 deletion(-)
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#diff --git a/NEWS b/NEWS
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#index f4b0e041..6588b30e 100644
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#--- a/NEWS
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#+++ b/NEWS
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#@@ -96,6 +96,9 @@
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# buffer overrun and/or segfault (thanks to Lemonboy).
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# - CVE-2017-9334: `length' no longer crashes on improper lists (fixes
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# #1375, thanks to "megane").
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#+ - The randomization factor of the symbol table was set before
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#+ the random seed was set, causing it to have a fixed value on many
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#+ platforms.
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#
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# - Core Libraries
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# - Unit "posix": If file-lock, file-lock/blocking or file-unlock are
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diff --git a/runtime.c b/runtime.c
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index 81c54dd2..a4580abc 100644
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--- a/runtime.c
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+++ b/runtime.c
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@@ -799,7 +799,6 @@ int CHICKEN_initialize(int heap, int stack, int symbols, void *toplevel)
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C_initial_timer_interrupt_period = INITIAL_TIMER_INTERRUPT_PERIOD;
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C_timer_interrupt_counter = INITIAL_TIMER_INTERRUPT_PERIOD;
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memset(signal_mapping_table, 0, sizeof(int) * NSIG);
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- initialize_symbol_table();
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C_dlerror = "cannot load compiled code dynamically - this is a statically linked executable";
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error_location = C_SCHEME_FALSE;
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C_pre_gc_hook = NULL;
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@@ -816,6 +815,7 @@ int CHICKEN_initialize(int heap, int stack, int symbols, void *toplevel)
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callback_continuation_level = 0;
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gc_ms = 0;
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(void)C_randomize(C_fix(time(NULL)));
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+ initialize_symbol_table();
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if (profiling) {
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#ifndef C_NONUNIX
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--
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2.11.0
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