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Accepting request 354788 from home:vitezslav_cizek:branches:Base:System

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- fix fingerprint ambiguity (bsc#958891)
  * https://bugs.gnupg.org/gnupg/issue2198
  * add 0001-gpg-Improve-the-keyblock-cache-s-transparency.patch

OBS-URL: https://build.opensuse.org/request/show/354788
OBS-URL: https://build.opensuse.org/package/show/Base:System/gpg2?expand=0&rev=130
This commit is contained in:
Marcus Meissner 2016-01-20 10:38:30 +00:00 committed by Git OBS Bridge
parent aa46062d11
commit 1d82ff8160
3 changed files with 115 additions and 1 deletions
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105
0001-gpg-Improve-the-keyblock-cache-s-transparency.patch Normal file
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@ -0,0 +1,105 @@
From 2e4e10c1dcd8dfeafec51f44ebf26acfeb770c41 Mon Sep 17 00:00:00 2001
From: "Neal H. Walfield" <neal@g10code.com>
Date: Tue, 15 Dec 2015 12:21:30 +0100
Subject: [PATCH] gpg: Improve the keyblock cache's transparency.
* kbx/keybox-search.c (keybox_offset): New function.
* g10/keydb.c (struct keyblock_cache): Add fields resource and offset.
(keyblock_cache_clear): Reset HD->KEYBLOCK_CACHE.RESOURCE and
HD->KEYBLOCK_CACHE.OFFSET.
(keydb_search): Don't use the cached result if it comes before the
current file position. When caching an entry, also record the
position at which it was found.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
GnuPG-bug-id: 2187
---
g10/keydb.c | 19 ++++++++++++++++++-
kbx/keybox-search.c | 8 ++++++++
kbx/keybox.h | 2 ++
3 files changed, 28 insertions(+), 1 deletion(-)
diff --git a/g10/keydb.c b/g10/keydb.c
index d7c35de..860187f 100644
--- a/g10/keydb.c
+++ b/g10/keydb.c
@@ -81,6 +81,9 @@ struct keyblock_cache {
u32 *sigstatus;
int pk_no;
int uid_no;
+ /* Offset of the record in the keybox. */
+ int resource;
+ off_t offset;
};
@@ -245,6 +248,8 @@ keyblock_cache_clear (struct keydb_handle *hd)
hd->keyblock_cache.sigstatus = NULL;
iobuf_close (hd->keyblock_cache.iobuf);
hd->keyblock_cache.iobuf = NULL;
+ hd->keyblock_cache.resource = -1;
+ hd->keyblock_cache.offset = -1;
}
@@ -1701,7 +1706,13 @@ keydb_search (KEYDB_HANDLE hd, KEYDB_SEARCH_DESC *desc,
&& (desc[0].mode == KEYDB_SEARCH_MODE_FPR20
|| desc[0].mode == KEYDB_SEARCH_MODE_FPR)
&& hd->keyblock_cache.state == KEYBLOCK_CACHE_FILLED
- && !memcmp (hd->keyblock_cache.fpr, desc[0].u.fpr, 20))
+ && !memcmp (hd->keyblock_cache.fpr, desc[0].u.fpr, 20)
+ /* Make sure the current file position occurs before the cached
+ result to avoid an infinite loop. */
+ && (hd->current < hd->keyblock_cache.resource
+ || (hd->current == hd->keyblock_cache.resource
+ && (keybox_offset (hd->active[hd->current].u.kb)
+ <= hd->keyblock_cache.offset))))
{
/* (DESCINDEX is already set). */
if (DBG_CLOCK)
@@ -1772,6 +1783,12 @@ keydb_search (KEYDB_HANDLE hd, KEYDB_SEARCH_DESC *desc,
&& hd->active[hd->current].type == KEYDB_RESOURCE_TYPE_KEYBOX)
{
hd->keyblock_cache.state = KEYBLOCK_CACHE_PREPARED;
+ hd->keyblock_cache.resource = hd->current;
+ /* The current offset is at the start of the next record. Since
+ a record is at least 1 byte, we just use offset - 1, which is
+ within the record. */
+ hd->keyblock_cache.offset
+ = keybox_offset (hd->active[hd->current].u.kb) - 1;
memcpy (hd->keyblock_cache.fpr, desc[0].u.fpr, 20);
}
diff --git a/kbx/keybox-search.c b/kbx/keybox-search.c
index 78e0c23..df959b6 100644
--- a/kbx/keybox-search.c
+++ b/kbx/keybox-search.c
@@ -1188,3 +1188,11 @@ keybox_get_flags (KEYBOX_HANDLE hd, int what, int idx, unsigned int *value)
ec = get_flag_from_image (buffer, length, what, value);
return ec? gpg_error (ec):0;
}
+
+off_t
+keybox_offset (KEYBOX_HANDLE hd)
+{
+ if (!hd->fp)
+ return 0;
+ return ftello (hd->fp);
+}
diff --git a/kbx/keybox.h b/kbx/keybox.h
index 8c31141..c91a282 100644
--- a/kbx/keybox.h
+++ b/kbx/keybox.h
@@ -77,6 +77,8 @@ int keybox_set_ephemeral (KEYBOX_HANDLE hd, int yes);
int keybox_lock (KEYBOX_HANDLE hd, int yes);
+off_t keybox_offset (KEYBOX_HANDLE hd);
+
/*-- keybox-file.c --*/
/* Fixme: This function does not belong here: Provide a better
interface to create a new keybox file. */
--
2.6.2

7
gpg2.changes
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@ -1,3 +1,10 @@
-------------------------------------------------------------------
Tue Jan 19 13:56:58 UTC 2016 - vcizek@suse.com
- fix fingerprint ambiguity (bsc#958891)
* https://bugs.gnupg.org/gnupg/issue2198
* add 0001-gpg-Improve-the-keyblock-cache-s-transparency.patch
-------------------------------------------------------------------
Sun Dec 6 14:14:45 UTC 2015 - p.drouand@gmail.com

4
gpg2.spec
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@ -1,7 +1,7 @@
#
# spec file for package gpg2
#
# Copyright (c) 2015 SUSE LINUX GmbH, Nuernberg, Germany.
# Copyright (c) 2016 SUSE LINUX GmbH, Nuernberg, Germany.
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
@ -34,6 +34,7 @@ Patch6: gnupg-dont-fail-with-seahorse-agent.patch
Patch8: gnupg-set_umask_before_open_outfile.patch
Patch9: gnupg-detect_FIPS_mode.patch
Patch11: gnupg-add_legacy_FIPS_mode_option.patch
Patch12: 0001-gpg-Improve-the-keyblock-cache-s-transparency.patch
BuildRequires: expect
BuildRequires: fdupes
BuildRequires: libadns-devel
@ -84,6 +85,7 @@ gpg-agent, and a keybox library.
%patch8 -p1
%patch9 -p1
%patch11 -p1
%patch12 -p1
%build
# build PIEs (position independent executables) for address space randomisation: