CVE-2011-1521
MEDIUM severity · CVSS 6.4 · CWE-399
6.4CVSS MEDIUM
Summary
The urllib and urllib2 modules in Python 2.x before 2.7.2 and 3.x before 3.2.1 process Location headers that specify redirection to file: URLs, which makes it easier for remote attackers to obtain sensitive information or cause a denial of service (resource consumption) via a crafted URL, as demonstrated by the file:///etc/passwd and file:///dev/zero URLs.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impact—
Integrity impactNone
Availability impact—
Exploit probability (EPSS)4%
AV:N/AC:L/Au:N/C:P/I:N/A:P
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: http://bugs.python.org/issue11662 ↗
Additional information
- NVD record
- http://bugs.python.org/issue11662Patch
- http://hg.python.org/cpython/rev/96a6c128822b/Patch
- http://hg.python.org/cpython/rev/b2934d98dac1/Patch
- http://hg.python.org/cpython/file/96a6c128822b/Misc/NEWS
- http://hg.python.org/cpython/file/b2934d98dac1/Misc/NEWS
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html
- http://openwall.com/lists/oss-security/2011/03/24/5