Vulnerability Name:

CCN-72048

Published:2011-12-28
Updated:2011-12-28
Summary:Python is vulnerable to a denial of service, caused by insufficient randomization of hash data structures. By sending multiple specially-crafted HTTP POST requests to an affected application containing conflicting hash key values, a remote attacker could exploit this vulnerability to cause the consumption of CPU resources.
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 (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 Consequences:Denial of Service
References:Source: CCN
Type: US-CERT Vulnerability Note VU#903934
Hash table implementations vulnerable to algorithmic complexity attacks

Source: CCN
Type: n.runs-SA-2011.004
Denial of Service through hash table multi-collisions

Source: CCN
Type: oCert Advisories #2011-003
multiple implementations denial-of-service via hash algorithm collision

Source: CCN
Type: Python Web site
Python Programming Language – Official Website

Source: CCN
Type: BID-51239
Python Hash Collision Denial Of Service Vulnerability

Source: XF
Type: UNKNOWN
python-hash-dos(72048)

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/a:python:python:2.2:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.2.1:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.4.0:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.5.0:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.0:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.1:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.1.1:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.1.2:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.1.3:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.2.2:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.2.3:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.3.0:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.3.1:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.3.2:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.3.3:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.3.4:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.3.5:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.3.6:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.4.1:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.4.2:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.4.3:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.4.4:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.5.1:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.5.2:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.3.7:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.4.5:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.4.6:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.5.4:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.5.3:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.6.2:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:3.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.6.0:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.6.1:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.6.4:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:3.0:-:*:*:*:*:*:*
  • OR cpe:/a:python:python:3.1.1:-:*:*:*:*:*:*
  • OR cpe:/a:python:python:2.7.0:*:*:*:*:*:*:*
  • OR cpe:/a:python:python:3.1:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    python python 2.2
    python python 2.2.1
    python python 2.4
    python python 2.5
    python python 2.0
    python python 2.0.1
    python python 2.1
    python python 2.1.1
    python python 2.1.2
    python python 2.1.3
    python python 2.2.2
    python python 2.2.3
    python python 2.3
    python python 2.3.1
    python python 2.3.2
    python python 2.3.3
    python python 2.3.4
    python python 2.3.5
    python python 2.3.6
    python python 2.4.1
    python python 2.4.2
    python python 2.4.3
    python python 2.4.4
    python python 2.5.1
    python python 2.5.2
    python python 2.3.7
    python python 2.4.5
    python python 2.4.6
    python python 2.5.4
    python python 2.5.3
    python python 2.6.2
    python python 3.0.1
    python python 2.6
    python python 2.6.1
    python python 2.6.4
    python python 3.0
    python python 3.1.1
    python python 2.7
    python python 3.1