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author | Kang Kai <kai.kang@windriver.com> | 2014-10-29 08:30:59 +0800 |
---|---|---|
committer | Martin Jansa <Martin.Jansa@gmail.com> | 2014-11-07 15:05:46 +0100 |
commit | 47cc7a8d1640d9128e2eaf3cc79cdef41e85881c (patch) | |
tree | 75eccdd3c788afe620bd2b54e5a86fcc5b9a3da7 | |
parent | ffb649d04322db8c3e218ee1a4499e202657375d (diff) | |
download | meta-openembedded-47cc7a8d1640d9128e2eaf3cc79cdef41e85881c.tar.gz |
libyaml: add fix for CVE-2014-2525 Security Advisory
Heap-based buffer overflow in the yaml_parser_scan_uri_escapes function
in LibYAML before 0.1.6 allows context-dependent attackers to execute
arbitrary code via a long sequence of percent-encoded characters in a
URI in a YAML file.
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-2525
Signed-off-by: Yue Tao <Yue.Tao@windriver.com>
Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
-rw-r--r-- | meta-oe/recipes-support/libyaml/files/libyaml-CVE-2014-2525.patch | 42 | ||||
-rw-r--r-- | meta-oe/recipes-support/libyaml/libyaml_0.1.5.bb | 4 |
2 files changed, 45 insertions, 1 deletions
diff --git a/meta-oe/recipes-support/libyaml/files/libyaml-CVE-2014-2525.patch b/meta-oe/recipes-support/libyaml/files/libyaml-CVE-2014-2525.patch new file mode 100644 index 000000000..2fdcba3ec --- /dev/null +++ b/meta-oe/recipes-support/libyaml/files/libyaml-CVE-2014-2525.patch | |||
@@ -0,0 +1,42 @@ | |||
1 | Heap-based buffer overflow in the yaml_parser_scan_uri_escapes function | ||
2 | in LibYAML before 0.1.6 allows context-dependent attackers to execute | ||
3 | arbitrary code via a long sequence of percent-encoded characters in a | ||
4 | URI in a YAML file. | ||
5 | |||
6 | Upstream-Status: Backport | ||
7 | |||
8 | Signed-off-by: Kai Kang <kai.kang@windriver.com> | ||
9 | --- | ||
10 | diff --git a/src/scanner.c.old b/src/scanner.c | ||
11 | index a2e8619..c6cde3b 100644 | ||
12 | --- a/src/scanner.c.old | ||
13 | +++ b/src/scanner.c | ||
14 | @@ -2619,6 +2619,9 @@ yaml_parser_scan_tag_uri(yaml_parser_t *parser, int directive, | ||
15 | /* Check if it is a URI-escape sequence. */ | ||
16 | |||
17 | if (CHECK(parser->buffer, '%')) { | ||
18 | + if (!STRING_EXTEND(parser, string)) | ||
19 | + goto error; | ||
20 | + | ||
21 | if (!yaml_parser_scan_uri_escapes(parser, | ||
22 | directive, start_mark, &string)) goto error; | ||
23 | } | ||
24 | diff --git a/src/yaml_private.h.old b/src/yaml_private.h | ||
25 | index ed5ea66..d72acb4 100644 | ||
26 | --- a/src/yaml_private.h.old | ||
27 | +++ b/src/yaml_private.h | ||
28 | @@ -132,9 +132,12 @@ yaml_string_join( | ||
29 | (string).start = (string).pointer = (string).end = 0) | ||
30 | |||
31 | #define STRING_EXTEND(context,string) \ | ||
32 | - (((string).pointer+5 < (string).end) \ | ||
33 | + ((((string).pointer+5 < (string).end) \ | ||
34 | || yaml_string_extend(&(string).start, \ | ||
35 | - &(string).pointer, &(string).end)) | ||
36 | + &(string).pointer, &(string).end)) ? \ | ||
37 | + 1 : \ | ||
38 | + ((context)->error = YAML_MEMORY_ERROR, \ | ||
39 | + 0)) | ||
40 | |||
41 | #define CLEAR(context,string) \ | ||
42 | ((string).pointer = (string).start, \ | ||
diff --git a/meta-oe/recipes-support/libyaml/libyaml_0.1.5.bb b/meta-oe/recipes-support/libyaml/libyaml_0.1.5.bb index c44eda4ee..127954196 100644 --- a/meta-oe/recipes-support/libyaml/libyaml_0.1.5.bb +++ b/meta-oe/recipes-support/libyaml/libyaml_0.1.5.bb | |||
@@ -7,7 +7,9 @@ SECTION = "libs/devel" | |||
7 | LICENSE = "MIT" | 7 | LICENSE = "MIT" |
8 | LIC_FILES_CHKSUM = "file://LICENSE;md5=6015f088759b10e0bc2bf64898d4ae17" | 8 | LIC_FILES_CHKSUM = "file://LICENSE;md5=6015f088759b10e0bc2bf64898d4ae17" |
9 | 9 | ||
10 | SRC_URI = "http://pyyaml.org/download/libyaml/yaml-${PV}.tar.gz" | 10 | SRC_URI = "http://pyyaml.org/download/libyaml/yaml-${PV}.tar.gz \ |
11 | file://libyaml-CVE-2014-2525.patch \ | ||
12 | " | ||
11 | 13 | ||
12 | SRC_URI[md5sum] = "24f6093c1e840ca5df2eb09291a1dbf1" | 14 | SRC_URI[md5sum] = "24f6093c1e840ca5df2eb09291a1dbf1" |
13 | SRC_URI[sha256sum] = "fa87ee8fb7b936ec04457bc044cd561155e1000a4d25029867752e543c2d3bef" | 15 | SRC_URI[sha256sum] = "fa87ee8fb7b936ec04457bc044cd561155e1000a4d25029867752e543c2d3bef" |