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Fix path traversal issue detection, the alias folder also needs to end with / for path traversal to happen

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This commit is contained in:
Alexandre Aubin 2019-03-20 20:32:30 +01:00 committed by Alexandre Aubin
parent acc32c9796
commit 16bb33b884
1 changed files with 6 additions and 5 deletions
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11
package_linter.py
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@ -196,7 +196,7 @@ class App():
for line in locationblock[1]:
instruction = line[0]
if instruction == "alias":
yield location
yield (location, line)
elif isinstance(instruction, list) and instruction and instruction[0] == "location":
yield from find_location_with_alias(instruction)
else:
@ -205,17 +205,18 @@ class App():
def find_path_traversal_issue(nginxconf):
for block in nginxconf:
for location in find_location_with_alias(block):
if not location.endswith("/"):
for location, alias in find_location_with_alias(block):
alias_path = alias[-1]
if not location.endswith("/") and alias_path.endswith("/"):
yield location
for location in find_path_traversal_issue(nginxconf):
print_warning(
"The nginx configuration (especially location %s) "
"appears vulnerable to path traversal issues as explained in\n"
"https://www.acunetix.com/vulnerabilities/web/path-traversal-via-misconfigured-nginx-alias/\n"
" https://www.acunetix.com/vulnerabilities/web/path-traversal-via-misconfigured-nginx-alias/\n"
"To fix it, look at the first lines of the nginx conf of the example app : \n"
"https://github.com/YunoHost/example_ynh/blob/master/conf/nginx.conf" % location
" https://github.com/YunoHost/example_ynh/blob/master/conf/nginx.conf" % location
)
def check_helper_consistency(self):