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CVE-2011-4954

Cobbler Privilege Escalation via PYTHON_EGG_CACHE

  • CVSS 7.8
  • CWE-269
  • Authentication, Authorization, and Session Management
  • Local

cobbler has local privilege escalation via the use of insecure location for PYTHON_EGG_CACHE

CVE
CVE-2011-4954
CWE
CWE-269
CVSS base score
7.8
Published
2019-11-19
OWASP
A05 Security Misconfiguration
Orthogonal defect classification
Build/Package/Merge
Code defect classification
Packaging Issues
Category
Authentication, Authorization, and Session Management
Subcategory
Privilege Escalation
Accessibility scope
Local
Impact
Privilege Escalation
Fixed by upgrading
Yes

Solution

Update Cobbler

Vulnerable code sample

import os

egg_cache_dir = '/tmp/python_egg_cache'

if not os.path.exists(egg_cache_dir):
    os.makedirs(egg_cache_dir)

os.environ['PYTHON_EGG_CACHE'] = egg_cache_dir

Patched code sample

import os
import tempfile

egg_cache_dir = os.path.join(tempfile.gettempdir(), 'python_egg_cache')

if not os.path.exists(egg_cache_dir):
    os.makedirs(egg_cache_dir, mode=0o700)

os.environ['PYTHON_EGG_CACHE'] = egg_cache_dir

Cite this entry

@misc{vaitp:cve20114954,
  title        = {{Cobbler Privilege Escalation via PYTHON_EGG_CACHE}},
  author       = {Bogaerts, Fr\'ed\'eric and Ivaki, Naghmeh and Fonseca, Jos\'e},
  year         = {2019},
  note         = {VAITP Python Vulnerability Dataset, entry CVE-2011-4954},
  howpublished = {\url{https://netpack.pt/vaitp/vulnerability/CVE-2011-4954/}}
}
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