diff options
Diffstat (limited to 'meta/recipes-devtools/python/python3/CVE-2018-20852.patch')
| -rw-r--r-- | meta/recipes-devtools/python/python3/CVE-2018-20852.patch | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/meta/recipes-devtools/python/python3/CVE-2018-20852.patch b/meta/recipes-devtools/python/python3/CVE-2018-20852.patch new file mode 100644 index 0000000000..82a114f29d --- /dev/null +++ b/meta/recipes-devtools/python/python3/CVE-2018-20852.patch @@ -0,0 +1,129 @@ +From 31c16d62fc762ab87e66e7f47e36dbfcfc8b5224 Mon Sep 17 00:00:00 2001 +From: Xtreak <tir.karthi@gmail.com> +Date: Sun, 17 Mar 2019 05:33:39 +0530 +Subject: [PATCH] [3.5] bpo-35121: prefix dot in domain for proper subdomain + validation (GH-10258) (#12281) + +Don't send cookies of domain A without Domain attribute to domain B when domain A is a suffix match of domain B while using a cookiejar with `http.cookiejar.DefaultCookiePolicy` policy. Patch by Karthikeyan Singaravelan. +(cherry picked from commit ca7fe5063593958e5efdf90f068582837f07bd14) + +Co-authored-by: Xtreak <tir.karthi@gmail.com> + +CVE: CVE-2018-20852 +Upstream-Status: Backport +[https://github.com/python/cpython/commit/4749f1b69000259e23b4cc6f63c542a9bdc62f1b] + +Signed-off-by: Dan Tran <dantran@microsoft.com> +--- + Lib/http/cookiejar.py | 13 ++++++-- + Lib/test/test_http_cookiejar.py | 30 +++++++++++++++++++ + .../2018-10-31-15-39-17.bpo-35121.EgHv9k.rst | 4 +++ + 3 files changed, 45 insertions(+), 2 deletions(-) + create mode 100644 Misc/NEWS.d/next/Security/2018-10-31-15-39-17.bpo-35121.EgHv9k.rst + +diff --git a/Lib/http/cookiejar.py b/Lib/http/cookiejar.py +index 6d4572af03..1cc9378ae4 100644 +--- a/Lib/http/cookiejar.py ++++ b/Lib/http/cookiejar.py +@@ -1148,6 +1148,11 @@ class DefaultCookiePolicy(CookiePolicy): + req_host, erhn = eff_request_host(request) + domain = cookie.domain + ++ if domain and not domain.startswith("."): ++ dotdomain = "." + domain ++ else: ++ dotdomain = domain ++ + # strict check of non-domain cookies: Mozilla does this, MSIE5 doesn't + if (cookie.version == 0 and + (self.strict_ns_domain & self.DomainStrictNonDomain) and +@@ -1160,7 +1165,7 @@ class DefaultCookiePolicy(CookiePolicy): + _debug(" effective request-host name %s does not domain-match " + "RFC 2965 cookie domain %s", erhn, domain) + return False +- if cookie.version == 0 and not ("."+erhn).endswith(domain): ++ if cookie.version == 0 and not ("."+erhn).endswith(dotdomain): + _debug(" request-host %s does not match Netscape cookie domain " + "%s", req_host, domain) + return False +@@ -1174,7 +1179,11 @@ class DefaultCookiePolicy(CookiePolicy): + req_host = "."+req_host + if not erhn.startswith("."): + erhn = "."+erhn +- if not (req_host.endswith(domain) or erhn.endswith(domain)): ++ if domain and not domain.startswith("."): ++ dotdomain = "." + domain ++ else: ++ dotdomain = domain ++ if not (req_host.endswith(dotdomain) or erhn.endswith(dotdomain)): + #_debug(" request domain %s does not match cookie domain %s", + # req_host, domain) + return False +diff --git a/Lib/test/test_http_cookiejar.py b/Lib/test/test_http_cookiejar.py +index 49c01ae489..e67e6ae780 100644 +--- a/Lib/test/test_http_cookiejar.py ++++ b/Lib/test/test_http_cookiejar.py +@@ -417,6 +417,7 @@ class CookieTests(unittest.TestCase): + ("http://foo.bar.com/", ".foo.bar.com", True), + ("http://foo.bar.com/", "foo.bar.com", True), + ("http://foo.bar.com/", ".bar.com", True), ++ ("http://foo.bar.com/", "bar.com", True), + ("http://foo.bar.com/", "com", True), + ("http://foo.com/", "rhubarb.foo.com", False), + ("http://foo.com/", ".foo.com", True), +@@ -427,6 +428,8 @@ class CookieTests(unittest.TestCase): + ("http://foo/", "foo", True), + ("http://foo/", "foo.local", True), + ("http://foo/", ".local", True), ++ ("http://barfoo.com", ".foo.com", False), ++ ("http://barfoo.com", "foo.com", False), + ]: + request = urllib.request.Request(url) + r = pol.domain_return_ok(domain, request) +@@ -961,6 +964,33 @@ class CookieTests(unittest.TestCase): + c.add_cookie_header(req) + self.assertFalse(req.has_header("Cookie")) + ++ c.clear() ++ ++ pol.set_blocked_domains([]) ++ req = urllib.request.Request("http://acme.com/") ++ res = FakeResponse(headers, "http://acme.com/") ++ cookies = c.make_cookies(res, req) ++ c.extract_cookies(res, req) ++ self.assertEqual(len(c), 1) ++ ++ req = urllib.request.Request("http://acme.com/") ++ c.add_cookie_header(req) ++ self.assertTrue(req.has_header("Cookie")) ++ ++ req = urllib.request.Request("http://badacme.com/") ++ c.add_cookie_header(req) ++ self.assertFalse(pol.return_ok(cookies[0], req)) ++ self.assertFalse(req.has_header("Cookie")) ++ ++ p = pol.set_blocked_domains(["acme.com"]) ++ req = urllib.request.Request("http://acme.com/") ++ c.add_cookie_header(req) ++ self.assertFalse(req.has_header("Cookie")) ++ ++ req = urllib.request.Request("http://badacme.com/") ++ c.add_cookie_header(req) ++ self.assertFalse(req.has_header("Cookie")) ++ + def test_secure(self): + for ns in True, False: + for whitespace in " ", "": +diff --git a/Misc/NEWS.d/next/Security/2018-10-31-15-39-17.bpo-35121.EgHv9k.rst b/Misc/NEWS.d/next/Security/2018-10-31-15-39-17.bpo-35121.EgHv9k.rst +new file mode 100644 +index 0000000000..d2eb8f1f35 +--- /dev/null ++++ b/Misc/NEWS.d/next/Security/2018-10-31-15-39-17.bpo-35121.EgHv9k.rst +@@ -0,0 +1,4 @@ ++Don't send cookies of domain A without Domain attribute to domain B ++when domain A is a suffix match of domain B while using a cookiejar ++with :class:`http.cookiejar.DefaultCookiePolicy` policy. Patch by ++Karthikeyan Singaravelan. +-- +2.22.0.vfs.1.1.57.gbaf16c8 + |