Vulnerability Name:

CVE-2009-3695 (CCN-53727)

Assigned:2009-10-09
Published:2009-10-09
Updated:2017-08-17
Summary:Algorithmic complexity vulnerability in the forms library in Django 1.0 before 1.0.4 and 1.1 before 1.1.1 allows remote attackers to cause a denial of service (CPU consumption) via a crafted (1) EmailField (email address) or (2) URLField (URL) that triggers a large amount of backtracking in a regular expression.
CVSS v3 Severity:5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
3.7 Low (Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
3.7 Low (CCN Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-Other
Vulnerability Consequences:Denial of Service
References:Source: CONFIRM
Type: UNKNOWN
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550457

Source: CCN
Type: django Ticket #11198 (closed: fixed)
Forms URLfield regex takes infinite to validate a long field

Source: MITRE
Type: CNA
CVE-2009-3695

Source: CCN
Type: Google Django users
regex infinite loop with 100% cpu use in django.forms.fields.email_re - DOS hole?

Source: MISC
Type: UNKNOWN
http://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51/

Source: CCN
Type: SA36948
Django forms Library Regular Expressions Denial of Service Vulnerability

Source: SECUNIA
Type: Vendor Advisory
36948

Source: SECUNIA
Type: Vendor Advisory
36968

Source: DEBIAN
Type: UNKNOWN
DSA-1905

Source: DEBIAN
Type: DSA-1905
python-django -- insufficient input validation

Source: CCN
Type: Django Web site
Security updates released

Source: CONFIRM
Type: Patch, Vendor Advisory
http://www.djangoproject.com/weblog/2009/oct/09/security/

Source: MLIST
Type: UNKNOWN
[oss-security] 20091013 Re: Duplicate CVE assignment notification [was: CVE id request: django]

Source: CCN
Type: OSVDB ID: 58832
Django Forms Library Multiple Field RegEx Handling DoS

Source: BID
Type: Patch
36655

Source: CCN
Type: BID-36655
Django 'EmailField' and 'URLField' Remote Denial of Service Vulnerability

Source: VUPEN
Type: Patch, Vendor Advisory
ADV-2009-2871

Source: XF
Type: UNKNOWN
django-emailfield-urlfield-dos(53727)

Source: XF
Type: UNKNOWN
django-emailfield-urlfield-dos(53727)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:djangoproject:django:1.0:*:*:*:*:*:*:*
  • OR cpe:/a:djangoproject:django:1.1:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    djangoproject django 1.0
    djangoproject django 1.1