CVE-2015-6835
PHP Session Deserializer - Use-After-Free
Severity Score
9.8
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
2
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
The session deserializer in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 mishandles multiple php_var_unserialize calls, which allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via crafted session content.
La sesión deserializer en PHP en versiones anteriores a 5.4.45, 5.5.x en versiones anteriores a 5.5.29 y 5.6.x en versiones anteriores a 5.6.13 no es correctamente manejada en llamadas multiples php_var_unserialize, lo que permite a atacantes remotos ejecutar código arbitrario o causar una denegación del servicio (uso después de liberación de memoria) a través de una sesión de contenido manipulada.
A flaw was discovered in the way PHP performed object unserialization. Specially crafted input processed by the unserialize() function could cause a PHP application to crash or, possibly, execute arbitrary code.
*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
- 2015-09-08 CVE Reserved
- 2015-09-09 First Exploit
- 2015-09-15 CVE Published
- 2024-06-15 EPSS Updated
- 2024-08-06 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-416: Use After Free
CAPEC
References (10)
| URL | Tag | Source |
|---|---|---|
| http://php.net/ChangeLog-5.php | X_refsource_confirm | |
| http://www.securityfocus.com/bid/76734 | Vdb Entry | |
| http://www.securitytracker.com/id/1033548 | Vdb Entry | |
| https://bugs.php.net/bug.php?id=70219 | X_refsource_confirm |
| URL | Date | SRC |
|---|---|---|
| https://www.exploit-db.com/exploits/38123 | 2015-09-09 | |
| https://github.com/ockeghem/CVE-2015-6835-checker | 2017-07-24 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://www.debian.org/security/2015/dsa-3358 | 2023-11-07 | |
| https://security.gentoo.org/glsa/201606-10 | 2023-11-07 | |
| https://access.redhat.com/security/cve/CVE-2015-6835 | 2016-03-15 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1260647 | 2016-03-15 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.0 Search vendor "Php" for product "Php" and version "5.6.0" | alpha1 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.0 Search vendor "Php" for product "Php" and version "5.6.0" | alpha2 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.0 Search vendor "Php" for product "Php" and version "5.6.0" | alpha3 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.0 Search vendor "Php" for product "Php" and version "5.6.0" | alpha4 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.0 Search vendor "Php" for product "Php" and version "5.6.0" | alpha5 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.0 Search vendor "Php" for product "Php" and version "5.6.0" | beta1 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.0 Search vendor "Php" for product "Php" and version "5.6.0" | beta2 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.0 Search vendor "Php" for product "Php" and version "5.6.0" | beta3 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.0 Search vendor "Php" for product "Php" and version "5.6.0" | beta4 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.1 Search vendor "Php" for product "Php" and version "5.6.1" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.2 Search vendor "Php" for product "Php" and version "5.6.2" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.3 Search vendor "Php" for product "Php" and version "5.6.3" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.4 Search vendor "Php" for product "Php" and version "5.6.4" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.5 Search vendor "Php" for product "Php" and version "5.6.5" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.6 Search vendor "Php" for product "Php" and version "5.6.6" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.7 Search vendor "Php" for product "Php" and version "5.6.7" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.8 Search vendor "Php" for product "Php" and version "5.6.8" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.9 Search vendor "Php" for product "Php" and version "5.6.9" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.10 Search vendor "Php" for product "Php" and version "5.6.10" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.11 Search vendor "Php" for product "Php" and version "5.6.11" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.6.12 Search vendor "Php" for product "Php" and version "5.6.12" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | <= 5.4.44 Search vendor "Php" for product "Php" and version " <= 5.4.44" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | alpha1 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | alpha2 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | alpha3 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | alpha4 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | alpha5 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | alpha6 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | beta1 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | beta2 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | beta3 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | beta4 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | rc1 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.0 Search vendor "Php" for product "Php" and version "5.5.0" | rc2 |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.1 Search vendor "Php" for product "Php" and version "5.5.1" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.2 Search vendor "Php" for product "Php" and version "5.5.2" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.3 Search vendor "Php" for product "Php" and version "5.5.3" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.4 Search vendor "Php" for product "Php" and version "5.5.4" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.5 Search vendor "Php" for product "Php" and version "5.5.5" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.6 Search vendor "Php" for product "Php" and version "5.5.6" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.7 Search vendor "Php" for product "Php" and version "5.5.7" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.8 Search vendor "Php" for product "Php" and version "5.5.8" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.9 Search vendor "Php" for product "Php" and version "5.5.9" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.10 Search vendor "Php" for product "Php" and version "5.5.10" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.11 Search vendor "Php" for product "Php" and version "5.5.11" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.12 Search vendor "Php" for product "Php" and version "5.5.12" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.13 Search vendor "Php" for product "Php" and version "5.5.13" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.14 Search vendor "Php" for product "Php" and version "5.5.14" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.15 Search vendor "Php" for product "Php" and version "5.5.15" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.16 Search vendor "Php" for product "Php" and version "5.5.16" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.17 Search vendor "Php" for product "Php" and version "5.5.17" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.18 Search vendor "Php" for product "Php" and version "5.5.18" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.19 Search vendor "Php" for product "Php" and version "5.5.19" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.20 Search vendor "Php" for product "Php" and version "5.5.20" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.21 Search vendor "Php" for product "Php" and version "5.5.21" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.22 Search vendor "Php" for product "Php" and version "5.5.22" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.23 Search vendor "Php" for product "Php" and version "5.5.23" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.24 Search vendor "Php" for product "Php" and version "5.5.24" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.25 Search vendor "Php" for product "Php" and version "5.5.25" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.26 Search vendor "Php" for product "Php" and version "5.5.26" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.27 Search vendor "Php" for product "Php" and version "5.5.27" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 5.5.28 Search vendor "Php" for product "Php" and version "5.5.28" | - |
Affected
| ||||||