CVE-2016-2513
python-django: User enumeration through timing difference on password hasher work factor upgrade
Severity Score
3.1
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
The password hasher in contrib/auth/hashers.py in Django before 1.8.10 and 1.9.x before 1.9.3 allows remote attackers to enumerate users via a timing attack involving login requests.
El hasher de contraseñas en contrib/auth/hashers.py en Django en versiones anteriores a 1.8.10 y 1.9.x en versiones anteriores a 1.9.3 permite a atacantes remotos enumerar usuarios a través de un ataque de sincronización que implica peticiones de login.
A timing attack flaw was found in the way Django's PBKDF2PasswordHasher performed password hashing. Passwords hashed with an older version of PBKDF2PasswordHasher used less hashing iterations, and thus allowed an attacker to enumerate existing users based on the time differences in the login requests.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2016-02-19 CVE Reserved
- 2016-03-03 CVE Published
- 2023-03-07 EPSS Updated
- 2024-08-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
- CWE-385: Covert Timing Channel
CAPEC
References (15)
| URL | Tag | Source |
|---|---|---|
| http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html | X_refsource_confirm |
|
| http://www.securityfocus.com/bid/83878 | Vdb Entry | |
| http://www.securitytracker.com/id/1035152 | Vdb Entry | |
| https://github.com/django/django/commit/67b46ba7016da2d259c1ecc7d666d11f5e1cfaab | X_refsource_confirm |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://rhn.redhat.com/errata/RHSA-2016-0502.html | 2017-09-08 | |
| http://rhn.redhat.com/errata/RHSA-2016-0504.html | 2017-09-08 | |
| http://rhn.redhat.com/errata/RHSA-2016-0505.html | 2017-09-08 | |
| http://rhn.redhat.com/errata/RHSA-2016-0506.html | 2017-09-08 | |
| http://www.debian.org/security/2016/dsa-3544 | 2017-09-08 | |
| http://www.ubuntu.com/usn/USN-2915-1 | 2017-09-08 | |
| http://www.ubuntu.com/usn/USN-2915-2 | 2017-09-08 | |
| http://www.ubuntu.com/usn/USN-2915-3 | 2017-09-08 | |
| https://www.djangoproject.com/weblog/2016/mar/01/security-releases | 2017-09-08 | |
| https://access.redhat.com/security/cve/CVE-2016-2513 | 2016-03-24 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1311438 | 2016-03-24 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Djangoproject Search vendor "Djangoproject" | Django Search vendor "Djangoproject" for product "Django" | 1.8.9 Search vendor "Djangoproject" for product "Django" and version "1.8.9" | - |
Affected
| ||||||
| Djangoproject Search vendor "Djangoproject" | Django Search vendor "Djangoproject" for product "Django" | 1.9 Search vendor "Djangoproject" for product "Django" and version "1.9" | - |
Affected
| ||||||
| Djangoproject Search vendor "Djangoproject" | Django Search vendor "Djangoproject" for product "Django" | 1.9.1 Search vendor "Djangoproject" for product "Django" and version "1.9.1" | - |
Affected
| ||||||
| Djangoproject Search vendor "Djangoproject" | Django Search vendor "Djangoproject" for product "Django" | 1.9.2 Search vendor "Djangoproject" for product "Django" and version "1.9.2" | - |
Affected
| ||||||