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authorArmin Kuster <akuster@mvista.com>2019-05-28 16:11:08 -0700
committerRichard Purdie <richard.purdie@linuxfoundation.org>2019-07-27 18:05:17 +0100
commitcd7f7bf38584be1df287e77e78bbdf659a07c385 (patch)
tree9773ee2cc32ef6d50e7479a9ddda1df69c618b0f /meta
parent2c225a199d441b52698eb094dadf2b98dba58244 (diff)
downloadpoky-cd7f7bf38584be1df287e77e78bbdf659a07c385.tar.gz
elfutils: Security fixes CVE-2019-7146,7149,7150
Source: http://sourceware.org/git/elfutils.git MR: 97563, 97568, 97558 Type: Security Fix Disposition: Backport from http://sourceware.org/git/elfutils.git ChangeID: 6183c2a25d5e32eec1846a428dd165e1de659f24 Description: Affects <= 0.175 Fixes: CVE-2019-7146 CVE-2019-7149 CVE-2019-7150 (From OE-Core rev: ac5dca7dc68519b36aa976dfd25d8efa76af74ec) Signed-off-by: Armin Kuster <akuster@mvista.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta')
-rw-r--r--meta/recipes-devtools/elfutils/elfutils_0.175.bb4
-rw-r--r--meta/recipes-devtools/elfutils/files/CVE-2019-7146_p1.patch52
-rw-r--r--meta/recipes-devtools/elfutils/files/CVE-2019-7146_p2.patch65
-rw-r--r--meta/recipes-devtools/elfutils/files/CVE-2019-7149.patch148
-rw-r--r--meta/recipes-devtools/elfutils/files/CVE-2019-7150.patch51
5 files changed, 320 insertions, 0 deletions
diff --git a/meta/recipes-devtools/elfutils/elfutils_0.175.bb b/meta/recipes-devtools/elfutils/elfutils_0.175.bb
index b0b9ddc736..e94a48efa5 100644
--- a/meta/recipes-devtools/elfutils/elfutils_0.175.bb
+++ b/meta/recipes-devtools/elfutils/elfutils_0.175.bb
@@ -27,6 +27,10 @@ SRC_URI = "https://sourceware.org/elfutils/ftp/${PV}/${BP}.tar.bz2 \
27 file://debian/hurd_path.patch \ 27 file://debian/hurd_path.patch \
28 file://debian/ignore_strmerge.diff \ 28 file://debian/ignore_strmerge.diff \
29 file://debian/disable_werror.patch \ 29 file://debian/disable_werror.patch \
30 file://CVE-2019-7149.patch \
31 file://CVE-2019-7150.patch \
32 file://CVE-2019-7146_p1.patch \
33 file://CVE-2019-7146_p2.patch \
30 " 34 "
31SRC_URI_append_libc-musl = " file://0008-build-Provide-alternatives-for-glibc-assumptions-hel.patch" 35SRC_URI_append_libc-musl = " file://0008-build-Provide-alternatives-for-glibc-assumptions-hel.patch"
32 36
diff --git a/meta/recipes-devtools/elfutils/files/CVE-2019-7146_p1.patch b/meta/recipes-devtools/elfutils/files/CVE-2019-7146_p1.patch
new file mode 100644
index 0000000000..b6cd29af1a
--- /dev/null
+++ b/meta/recipes-devtools/elfutils/files/CVE-2019-7146_p1.patch
@@ -0,0 +1,52 @@
1From 012018907ca05eb0ab51d424a596ef38fc87cae1 Mon Sep 17 00:00:00 2001
2From: Mark Wielaard <mark@klomp.org>
3Date: Wed, 16 Jan 2019 11:57:35 +0100
4Subject: [PATCH] libebl: Check GNU property note pr_datasz fits inside note
5 description.
6
7Before printing the data values, make sure pr_datasz doesn't go beyond
8the end of the note description data.
9
10https://sourceware.org/bugzilla/show_bug.cgi?id=24075
11
12Signed-off-by: Mark Wielaard <mark@klomp.org>
13
14Upstream-Status: Backport
15CVE: CVE-2019-7146 patch #1
16Signed-off-by: Armin Kuster <akuster@mvista.com>
17
18---
19 libebl/ChangeLog | 4 ++++
20 libebl/eblobjnote.c | 7 +++++++
21 2 files changed, 11 insertions(+)
22
23Index: elfutils-0.175/libebl/eblobjnote.c
24===================================================================
25--- elfutils-0.175.orig/libebl/eblobjnote.c
26+++ elfutils-0.175/libebl/eblobjnote.c
27@@ -350,6 +350,13 @@ ebl_object_note (Ebl *ebl, uint32_t name
28 desc += 8;
29 descsz -= 8;
30
31+ if (prop.pr_datasz > descsz)
32+ {
33+ printf ("BAD property datasz: %" PRId32 "\n",
34+ prop.pr_datasz);
35+ return;
36+ }
37+
38 int elfclass = gelf_getclass (ebl->elf);
39 char *elfident = elf_getident (ebl->elf, NULL);
40 GElf_Ehdr ehdr;
41Index: elfutils-0.175/libebl/ChangeLog
42===================================================================
43--- elfutils-0.175.orig/libebl/ChangeLog
44+++ elfutils-0.175/libebl/ChangeLog
45@@ -1,3 +1,7 @@
46+2019-01-16 Mark Wielaard <mark@klomp.org>
47+
48+ * eblobjnte.c (ebl_object_note): Check pr_datasz isn't too large.
49+
50 2018-11-15 Mark Wielaard <mark@klomp.org>
51
52 * eblobjnotetypename.c (ebl_object_note_type_name): Don't update
diff --git a/meta/recipes-devtools/elfutils/files/CVE-2019-7146_p2.patch b/meta/recipes-devtools/elfutils/files/CVE-2019-7146_p2.patch
new file mode 100644
index 0000000000..4434b36579
--- /dev/null
+++ b/meta/recipes-devtools/elfutils/files/CVE-2019-7146_p2.patch
@@ -0,0 +1,65 @@
1From cd7ded3df43f655af945c869976401a602e46fcd Mon Sep 17 00:00:00 2001
2From: Mark Wielaard <mark@klomp.org>
3Date: Wed, 30 Jan 2019 00:04:11 +0100
4Subject: [PATCH] libebl: Check GNU property note data padding fits inside
5 note.
6
7The GNU property note data is padded. Make sure the extra padding
8still fits in the note description.
9
10https://sourceware.org/bugzilla/show_bug.cgi?id=24075
11
12Signed-off-by: Mark Wielaard <mark@klomp.org>
13
14Upstream-Status: Backport
15CVE: CVE-2019-7146 patch #2
16Signed-off-by: Armin Kuster <akuster@mvista.com>
17
18---
19 libebl/ChangeLog | 5 +++++
20 libebl/eblobjnote.c | 17 +++++++++--------
21 2 files changed, 14 insertions(+), 8 deletions(-)
22
23Index: elfutils-0.175/libebl/ChangeLog
24===================================================================
25--- elfutils-0.175.orig/libebl/ChangeLog
26+++ elfutils-0.175/libebl/ChangeLog
27@@ -1,3 +1,8 @@
28+2019-01-29 Mark Wielaard <mark@klomp.org>
29+
30+ * eblobjnote.c (ebl_object_note): Check pr_datasz padding doesn't
31+ overflow descsz.
32+
33 2019-01-16 Mark Wielaard <mark@klomp.org>
34
35 * eblobjnte.c (ebl_object_note): Check pr_datasz isn't too large.
36Index: elfutils-0.175/libebl/eblobjnote.c
37===================================================================
38--- elfutils-0.175.orig/libebl/eblobjnote.c
39+++ elfutils-0.175/libebl/eblobjnote.c
40@@ -486,16 +486,17 @@ ebl_object_note (Ebl *ebl, uint32_t name
41 printf ("%02" PRIx8 "\n", (uint8_t) desc[i]);
42 }
43 }
44+
45 if (elfclass == ELFCLASS32)
46- {
47- desc += NOTE_ALIGN4 (prop.pr_datasz);
48- descsz -= NOTE_ALIGN4 (prop.pr_datasz);
49- }
50+ prop.pr_datasz = NOTE_ALIGN4 (prop.pr_datasz);
51 else
52- {
53- desc += NOTE_ALIGN8 (prop.pr_datasz);
54- descsz -= NOTE_ALIGN8 (prop.pr_datasz);
55- }
56+ prop.pr_datasz = NOTE_ALIGN8 (prop.pr_datasz);
57+
58+ desc += prop.pr_datasz;
59+ if (descsz > prop.pr_datasz)
60+ descsz -= prop.pr_datasz;
61+ else
62+ descsz = 0;
63 }
64 }
65 break;
diff --git a/meta/recipes-devtools/elfutils/files/CVE-2019-7149.patch b/meta/recipes-devtools/elfutils/files/CVE-2019-7149.patch
new file mode 100644
index 0000000000..215a1715bf
--- /dev/null
+++ b/meta/recipes-devtools/elfutils/files/CVE-2019-7149.patch
@@ -0,0 +1,148 @@
1From 2562759d6fe5b364fe224852e64e8bda39eb2e35 Mon Sep 17 00:00:00 2001
2From: Mark Wielaard <mark@klomp.org>
3Date: Sun, 20 Jan 2019 22:10:18 +0100
4Subject: [PATCH] libdw: Check terminating NUL byte in dwarf_getsrclines for
5 dir/file table.
6
7For DWARF version < 5 the .debug_line directory and file tables consist
8of a terminating NUL byte after all strings. The code used to just skip
9this without checking it actually existed. This could case a spurious
10read past the end of data.
11
12Fix the same issue in readelf.
13
14https://sourceware.org/bugzilla/show_bug.cgi?id=24102
15
16Signed-off-by: Mark Wielaard <mark@klomp.org>
17
18Upstream-Status: Backport
19CVE: CVE-2019-7149
20Signed-off-by: Armin Kuster <akuster@mvista.com>
21
22---
23 libdw/ChangeLog | 5 +++++
24 libdw/dwarf_getsrclines.c | 11 ++++++++---
25 src/ChangeLog | 5 +++++
26 src/readelf.c | 8 ++++++--
27 4 files changed, 24 insertions(+), 5 deletions(-)
28
29Index: elfutils-0.175/libdw/dwarf_getsrclines.c
30===================================================================
31--- elfutils-0.175.orig/libdw/dwarf_getsrclines.c
32+++ elfutils-0.175/libdw/dwarf_getsrclines.c
33@@ -315,7 +315,7 @@ read_srclines (Dwarf *dbg,
34 if (version < 5)
35 {
36 const unsigned char *dirp = linep;
37- while (*dirp != 0)
38+ while (dirp < lineendp && *dirp != 0)
39 {
40 uint8_t *endp = memchr (dirp, '\0', lineendp - dirp);
41 if (endp == NULL)
42@@ -323,6 +323,8 @@ read_srclines (Dwarf *dbg,
43 ++ndirs;
44 dirp = endp + 1;
45 }
46+ if (dirp >= lineendp || *dirp != '\0')
47+ goto invalid_data;
48 ndirs = ndirs + 1; /* There is always the "unknown" dir. */
49 }
50 else
51@@ -392,11 +394,12 @@ read_srclines (Dwarf *dbg,
52 {
53 dirarray[n].dir = (char *) linep;
54 uint8_t *endp = memchr (linep, '\0', lineendp - linep);
55- assert (endp != NULL);
56+ assert (endp != NULL); // Checked above when calculating ndirlist.
57 dirarray[n].len = endp - linep;
58 linep = endp + 1;
59 }
60 /* Skip the final NUL byte. */
61+ assert (*linep == '\0'); // Checked above when calculating ndirlist.
62 ++linep;
63 }
64 else
65@@ -471,7 +474,7 @@ read_srclines (Dwarf *dbg,
66 {
67 if (unlikely (linep >= lineendp))
68 goto invalid_data;
69- while (*linep != 0)
70+ while (linep < lineendp && *linep != '\0')
71 {
72 struct filelist *new_file = NEW_FILE ();
73
74@@ -527,6 +530,8 @@ read_srclines (Dwarf *dbg,
75 goto invalid_data;
76 get_uleb128 (new_file->info.length, linep, lineendp);
77 }
78+ if (linep >= lineendp || *linep != '\0')
79+ goto invalid_data;
80 /* Skip the final NUL byte. */
81 ++linep;
82 }
83Index: elfutils-0.175/src/readelf.c
84===================================================================
85--- elfutils-0.175.orig/src/readelf.c
86+++ elfutils-0.175/src/readelf.c
87@@ -8444,7 +8444,7 @@ print_debug_line_section (Dwfl_Module *d
88 }
89 else
90 {
91- while (*linep != 0)
92+ while (linep < lineendp && *linep != 0)
93 {
94 unsigned char *endp = memchr (linep, '\0', lineendp - linep);
95 if (unlikely (endp == NULL))
96@@ -8454,6 +8454,8 @@ print_debug_line_section (Dwfl_Module *d
97
98 linep = endp + 1;
99 }
100+ if (linep >= lineendp || *linep != 0)
101+ goto invalid_unit;
102 /* Skip the final NUL byte. */
103 ++linep;
104 }
105@@ -8523,7 +8525,7 @@ print_debug_line_section (Dwfl_Module *d
106 else
107 {
108 puts (gettext (" Entry Dir Time Size Name"));
109- for (unsigned int cnt = 1; *linep != 0; ++cnt)
110+ for (unsigned int cnt = 1; linep < lineendp && *linep != 0; ++cnt)
111 {
112 /* First comes the file name. */
113 char *fname = (char *) linep;
114@@ -8553,6 +8555,8 @@ print_debug_line_section (Dwfl_Module *d
115 printf (" %-5u %-5u %-9u %-9u %s\n",
116 cnt, diridx, mtime, fsize, fname);
117 }
118+ if (linep >= lineendp || *linep != '\0')
119+ goto invalid_unit;
120 /* Skip the final NUL byte. */
121 ++linep;
122 }
123Index: elfutils-0.175/libdw/ChangeLog
124===================================================================
125--- elfutils-0.175.orig/libdw/ChangeLog
126+++ elfutils-0.175/libdw/ChangeLog
127@@ -1,3 +1,8 @@
128+2019-01-20 Mark Wielaard <mark@klomp.org>
129+
130+ * dwarf_getsrclines.c (read_srclines): Check terminating NUL byte
131+ for dir and file lists.
132+
133 2018-10-20 Mark Wielaard <mark@klomp.org>
134
135 * libdw.map (ELFUTILS_0.175): New section. Add dwelf_elf_begin.
136Index: elfutils-0.175/src/ChangeLog
137===================================================================
138--- elfutils-0.175.orig/src/ChangeLog
139+++ elfutils-0.175/src/ChangeLog
140@@ -1,3 +1,8 @@
141+2019-01-20 Mark Wielaard <mark@klomp.org>
142+
143+ * readelf.c (print_debug_line_section): Check terminating NUL byte
144+ for dir and file tables.
145+
146 2018-11-10 Mark Wielaard <mark@klomp.org>
147
148 * elflint.c (check_program_header): Allow PT_GNU_EH_FRAME segment
diff --git a/meta/recipes-devtools/elfutils/files/CVE-2019-7150.patch b/meta/recipes-devtools/elfutils/files/CVE-2019-7150.patch
new file mode 100644
index 0000000000..01a4fb1562
--- /dev/null
+++ b/meta/recipes-devtools/elfutils/files/CVE-2019-7150.patch
@@ -0,0 +1,51 @@
1From da5c5336a1eaf519de246f7d9f0f5585e1d4ac59 Mon Sep 17 00:00:00 2001
2From: Mark Wielaard <mark@klomp.org>
3Date: Sun, 20 Jan 2019 23:05:56 +0100
4Subject: [PATCH] libdwfl: Sanity check partial core file dyn data read.
5
6When reading the dyn data from the core file check if we got everything,
7or just part of the data.
8
9https://sourceware.org/bugzilla/show_bug.cgi?id=24103
10
11Signed-off-by: Mark Wielaard <mark@klomp.org>
12
13Upstream-Status: Backport
14CVE: CVE-2019-7150
15Signed-off-by: Armin Kuster <akuster@mvista.com>
16
17---
18 libdwfl/ChangeLog | 5 +++++
19 libdwfl/dwfl_segment_report_module.c | 6 ++++++
20 2 files changed, 11 insertions(+)
21
22Index: elfutils-0.175/libdwfl/dwfl_segment_report_module.c
23===================================================================
24--- elfutils-0.175.orig/libdwfl/dwfl_segment_report_module.c
25+++ elfutils-0.175/libdwfl/dwfl_segment_report_module.c
26@@ -783,6 +783,12 @@ dwfl_segment_report_module (Dwfl *dwfl,
27 if (dyn_filesz != 0 && dyn_filesz % dyn_entsize == 0
28 && ! read_portion (&dyn_data, &dyn_data_size, dyn_vaddr, dyn_filesz))
29 {
30+ /* dyn_data_size will be zero if we got everything from the initial
31+ buffer, otherwise it will be the size of the new buffer that
32+ could be read. */
33+ if (dyn_data_size != 0)
34+ dyn_filesz = dyn_data_size;
35+
36 void *dyns = malloc (dyn_filesz);
37 Elf32_Dyn (*d32)[dyn_filesz / sizeof (Elf32_Dyn)] = dyns;
38 Elf64_Dyn (*d64)[dyn_filesz / sizeof (Elf64_Dyn)] = dyns;
39Index: elfutils-0.175/libdwfl/ChangeLog
40===================================================================
41--- elfutils-0.175.orig/libdwfl/ChangeLog
42+++ elfutils-0.175/libdwfl/ChangeLog
43@@ -1,3 +1,8 @@
44+2019-01-20 Mark Wielaard <mark@klomp.org>
45+
46+ * dwfl_segment_report_module.c (dwfl_segment_report_module): Check
47+ dyn_filesz vs dyn_data_size after read_portion call.
48+
49 2018-10-20 Mark Wielaard <mark@klomp.org>
50
51 * libdwflP.h (__libdw_open_elf): New internal function declaration.
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-14 09:23:59 +0000