February 2017 - tor-commits - lists.torproject.org

[tor/maint-0.2.9] Merge remote-tracking branch 'public/bug17404_024' into maint-0.2.4
by nickm＠torproject.org 07 Feb '17

07 Feb '17

commit 51675f97d30e48da68f2cf538f7f805f51af4c36 Merge: 6cb8c0f 9459ae2 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Feb 7 08:37:07 2017 -0500 Merge remote-tracking branch 'public/bug17404_024' into maint-0.2.4 changes/bug17404 | 6 ++++++ src/common/tortls.c | 4 ++++ 2 files changed, 10 insertions(+)

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[tor/master] Merge branch 'maint-0.2.6' into maint-0.2.7
by nickm＠torproject.org 07 Feb '17

07 Feb '17

commit eb72365554451f5e129169bb1216a9610f7ff183 Merge: 8c91cbb 8936c50 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Feb 7 08:39:25 2017 -0500 Merge branch 'maint-0.2.6' into maint-0.2.7

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[tor/master] Merge remote-tracking branch 'public/bug17404_024' into maint-0.2.4
by nickm＠torproject.org 07 Feb '17

07 Feb '17

commit 51675f97d30e48da68f2cf538f7f805f51af4c36 Merge: 6cb8c0f 9459ae2 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Feb 7 08:37:07 2017 -0500 Merge remote-tracking branch 'public/bug17404_024' into maint-0.2.4 changes/bug17404 | 6 ++++++ src/common/tortls.c | 4 ++++ 2 files changed, 10 insertions(+)

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[tor/maint-0.2.9] Merge branch 'maint-0.2.4' into maint-0.2.5
by nickm＠torproject.org 07 Feb '17

07 Feb '17

commit 332543baedcf651b75722e5d4626c62fdd24ef60 Merge: 640b402 6cb8c0f Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Feb 7 08:34:08 2017 -0500 Merge branch 'maint-0.2.4' into maint-0.2.5 changes/bug18089 | 6 ++++++ src/common/crypto.c | 10 ++++++++++ 2 files changed, 16 insertions(+)

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[tor/master] Make memwipe() do nothing when passed a NULL pointer or zero size
by nickm＠torproject.org 07 Feb '17

07 Feb '17

commit fb7d1f41b409761be3381efaeec0f56d2a470a9f Author: teor (Tim Wilson-Brown) <teor2345(a)gmail.com> Date: Tue Jan 19 11:22:58 2016 +1100 Make memwipe() do nothing when passed a NULL pointer or zero size Check size argument to memwipe() for underflow. Closes bug #18089. Reported by "gk", patch by "teor". Bugfix on 0.2.3.25 and 0.2.4.6-alpha (#7352), commit 49dd5ef3 on 7 Nov 2012. --- changes/bug18089 | 6 ++++++ src/common/crypto.c | 8 ++++++++ 2 files changed, 14 insertions(+) diff --git a/changes/bug18089 b/changes/bug18089 new file mode 100644 index 0000000..c1fb342 --- /dev/null +++ b/changes/bug18089 @@ -0,0 +1,6 @@ + o Minor fixes (security): + - Make memwipe() do nothing when passed a NULL pointer + or zero size. Check size argument to memwipe() for underflow. + Closes bug #18089. Reported by "gk", patch by "teor". + Bugfix on 0.2.3.25 and 0.2.4.6-alpha (#7352), + commit 49dd5ef3 on 7 Nov 2012. diff --git a/src/common/crypto.c b/src/common/crypto.c index 925beb3..f913917 100644 --- a/src/common/crypto.c +++ b/src/common/crypto.c @@ -2972,6 +2972,7 @@ secret_to_key(char *key_out, size_t key_out_len, const char *secret, /** * Destroy the sz bytes of data stored at mem, setting them to * the value byte. + * If mem is NULL or sz is zero, nothing happens. * * This function is preferable to memset, since many compilers will happily * optimize out memset() when they can convince themselves that the data being @@ -2989,6 +2990,13 @@ secret_to_key(char *key_out, size_t key_out_len, const char *secret, void memwipe(void *mem, uint8_t byte, size_t sz) { + if (mem == NULL || sz == 0) { + return; + } + + /* Data this large is likely to be an underflow. */ + tor_assert(sz < SIZE_T_CEILING); + /* Because whole-program-optimization exists, we may not be able to just * have this function call "memset". A smart compiler could inline it, then * eliminate dead memsets, and declare itself to be clever. */

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[tor/maint-0.2.9] Refine the memwipe() arguments check for 18089 a little more.
by nickm＠torproject.org 07 Feb '17

07 Feb '17

commit 6cb8c0fd4e9c544710b1ad72a695feb87a1d7ee7 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Jan 19 08:28:58 2016 -0500 Refine the memwipe() arguments check for 18089 a little more. We still silently ignore memwipe(NULL, ch, 0); and memwipe(ptr, ch, 0); /* for ptr != NULL */ But we now assert on: memwipe(NULL, ch, 30); --- src/common/crypto.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/common/crypto.c b/src/common/crypto.c index f913917..522c137 100644 --- a/src/common/crypto.c +++ b/src/common/crypto.c @@ -2990,9 +2990,11 @@ secret_to_key(char *key_out, size_t key_out_len, const char *secret, void memwipe(void *mem, uint8_t byte, size_t sz) { - if (mem == NULL || sz == 0) { + if (sz == 0) { return; } + /* If sz is nonzero, then mem must not be NULL. */ + tor_assert(mem != NULL); /* Data this large is likely to be an underflow. */ tor_assert(sz < SIZE_T_CEILING);

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[tor/master] Merge branch 'maint-0.2.5' into maint-0.2.6
by nickm＠torproject.org 07 Feb '17

07 Feb '17

commit 8936c50d83f3a90fb6bb3314b86f56f46d42d749 Merge: da0d5ad 05ec055 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Feb 7 08:39:07 2017 -0500 Merge branch 'maint-0.2.5' into maint-0.2.6 changes/bug17404 | 6 ++++++ src/common/tortls.c | 4 ++++ 2 files changed, 10 insertions(+)

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[tor/maint-0.2.9] Merge branch 'maint-0.2.6' into maint-0.2.7
by nickm＠torproject.org 07 Feb '17

07 Feb '17

commit eb72365554451f5e129169bb1216a9610f7ff183 Merge: 8c91cbb 8936c50 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Feb 7 08:39:25 2017 -0500 Merge branch 'maint-0.2.6' into maint-0.2.7

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[tor/maint-0.2.9] Merge branch 'maint-0.2.8' into maint-0.2.9
by nickm＠torproject.org 07 Feb '17

07 Feb '17

commit 0f46f7d1ec8064ffc5573d60819fc7f231497e12 Merge: b928095 7b24f3e Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Feb 7 08:39:39 2017 -0500 Merge branch 'maint-0.2.8' into maint-0.2.9

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[tor/maint-0.2.9] Merge branch 'maint-0.2.7' into maint-0.2.8
by nickm＠torproject.org 07 Feb '17

07 Feb '17

commit 7b24f3e0fef04cdb21cd0b73ec4fde457702a81b Merge: c77ace6 eb72365 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Feb 7 08:39:33 2017 -0500 Merge branch 'maint-0.2.7' into maint-0.2.8

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