CVE-2016-2181
openssl: DTLS replay protection bypass allows DoS against DTLS connection
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 Anti-Replay feature in the DTLS implementation in OpenSSL before 1.1.0 mishandles early use of a new epoch number in conjunction with a large sequence number, which allows remote attackers to cause a denial of service (false-positive packet drops) via spoofed DTLS records, related to rec_layer_d1.c and ssl3_record.c.
La funcionalidad Anti-Replay en la implementación DTLS en OpenSSL en versiones anteriores a 1.1.0 no maneja adecuadamente el uso temprano de un número de época nuevo en conjunción con un número de secuencia larga, lo que permite a atacantes remotos provocar una denegación de servicio (gotas de paquetes falsos positivos) a través de registros DTLS suplantados, relacionado con rec_layer_d1.c y ssl3_record.c.
A flaw was found in the Datagram TLS (DTLS) replay protection implementation in OpenSSL. A remote attacker could possibly use this flaw to make a DTLS server using OpenSSL to reject further packets sent from a DTLS client over an established DTLS connection.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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
- 2016-01-29 CVE Reserved
- 2016-09-16 CVE Published
- 2024-07-09 EPSS Updated
- 2024-08-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-20: Improper Input Validation
- CWE-189: Numeric Errors
CAPEC
References (43)
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1 Search vendor "Openssl" for product "Openssl" and version "1.0.1" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1a Search vendor "Openssl" for product "Openssl" and version "1.0.1a" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1b Search vendor "Openssl" for product "Openssl" and version "1.0.1b" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1c Search vendor "Openssl" for product "Openssl" and version "1.0.1c" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1d Search vendor "Openssl" for product "Openssl" and version "1.0.1d" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1e Search vendor "Openssl" for product "Openssl" and version "1.0.1e" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1f Search vendor "Openssl" for product "Openssl" and version "1.0.1f" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1g Search vendor "Openssl" for product "Openssl" and version "1.0.1g" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1h Search vendor "Openssl" for product "Openssl" and version "1.0.1h" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1i Search vendor "Openssl" for product "Openssl" and version "1.0.1i" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1j Search vendor "Openssl" for product "Openssl" and version "1.0.1j" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1k Search vendor "Openssl" for product "Openssl" and version "1.0.1k" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1l Search vendor "Openssl" for product "Openssl" and version "1.0.1l" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1m Search vendor "Openssl" for product "Openssl" and version "1.0.1m" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1n Search vendor "Openssl" for product "Openssl" and version "1.0.1n" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1o Search vendor "Openssl" for product "Openssl" and version "1.0.1o" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1p Search vendor "Openssl" for product "Openssl" and version "1.0.1p" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1q Search vendor "Openssl" for product "Openssl" and version "1.0.1q" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1r Search vendor "Openssl" for product "Openssl" and version "1.0.1r" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1s Search vendor "Openssl" for product "Openssl" and version "1.0.1s" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.1t Search vendor "Openssl" for product "Openssl" and version "1.0.1t" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2 Search vendor "Openssl" for product "Openssl" and version "1.0.2" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2a Search vendor "Openssl" for product "Openssl" and version "1.0.2a" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2b Search vendor "Openssl" for product "Openssl" and version "1.0.2b" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2c Search vendor "Openssl" for product "Openssl" and version "1.0.2c" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2d Search vendor "Openssl" for product "Openssl" and version "1.0.2d" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2e Search vendor "Openssl" for product "Openssl" and version "1.0.2e" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2f Search vendor "Openssl" for product "Openssl" and version "1.0.2f" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2g Search vendor "Openssl" for product "Openssl" and version "1.0.2g" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.2h Search vendor "Openssl" for product "Openssl" and version "1.0.2h" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Linux Search vendor "Oracle" for product "Linux" | 6 Search vendor "Oracle" for product "Linux" and version "6" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Linux Search vendor "Oracle" for product "Linux" | 7 Search vendor "Oracle" for product "Linux" and version "7" | - |
Affected
| ||||||