CVE-2011-0539
Severity Score
7.5
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
The key_certify function in usr.bin/ssh/key.c in OpenSSH 5.6 and 5.7, when generating legacy certificates using the -t command-line option in ssh-keygen, does not initialize the nonce field, which might allow remote attackers to obtain sensitive stack memory contents or make it easier to conduct hash collision attacks.
La función key_certify en usr.bin/ssh/key.c en OpenSSH v5.6 y v5.7 al generar los certificados de herencia con la opción de línea de comandos -t en ssh-keygen, no se inicializa el campo nonce, que podría permitir a atacantes remotos obtener contenido sensible de la pila de memoria o que sea más fácil de llevar a cabo ataques de colisión hash.
*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
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2011-01-20 CVE Reserved
- 2011-02-10 CVE Published
- 2024-08-06 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-264: Permissions, Privileges, and Access Controls
CAPEC
References (10)
| URL | Tag | Source |
|---|---|---|
| http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673 | X_refsource_confirm | |
| http://secunia.com/advisories/44269 | Third Party Advisory | |
| http://www.openwall.com/lists/oss-security/2011/02/04/2 | Mailing List |
|
| http://www.securityfocus.com/bid/46155 | Vdb Entry | |
| http://www.securitytracker.com/id?1025028 | Vdb Entry | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/65163 | Vdb Entry |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://www.openssh.com/txt/legacy-cert.adv | 2017-08-17 |
| URL | Date | SRC |
|---|---|---|
| http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777 | 2017-08-17 | |
| http://secunia.com/advisories/43181 | 2017-08-17 | |
| http://www.vupen.com/english/advisories/2011/0284 | 2017-08-17 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Openbsd Search vendor "Openbsd" | Openssh Search vendor "Openbsd" for product "Openssh" | 5.6 Search vendor "Openbsd" for product "Openssh" and version "5.6" | - |
Affected
| ||||||
| Openbsd Search vendor "Openbsd" | Openssh Search vendor "Openbsd" for product "Openssh" | 5.7 Search vendor "Openbsd" for product "Openssh" and version "5.7" | - |
Affected
| ||||||