CVE-2016-6313
libgcrypt: PRNG output is predictable
Severity Score
5.3
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
The mixing functions in the random number generator in Libgcrypt before 1.5.6, 1.6.x before 1.6.6, and 1.7.x before 1.7.3 and GnuPG before 1.4.21 make it easier for attackers to obtain the values of 160 bits by leveraging knowledge of the previous 4640 bits.
Las funciones de mezcla en el generador de números aleatorios en Libgcrypt en versiones anteriores a 1.5.6, 1.6.x en versiones anteriores a 1.6.6 y 1.7.x en versiones anteriores a 1.7.3 y GnuPG en versiones anteriores a 1.4.21 hacen más fácil para atacantes obtener valores de 160 bits aprovechando el conocimiento de los 4640 bits previos.
A design flaw was found in the libgcrypt PRNG (Pseudo-Random Number Generator). An attacker able to obtain the first 580 bytes of the PRNG output could predict the following 20 bytes.
*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
- 2016-07-26 CVE Reserved
- 2016-08-18 CVE Published
- 2023-11-08 EPSS Updated
- 2024-08-06 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
References (13)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/92527 | Third Party Advisory | |
| http://www.securitytracker.com/id/1036635 | Vdb Entry | |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=blob_plain%3Bf=NEWS | X_refsource_confirm |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://rhn.redhat.com/errata/RHSA-2016-2674.html | 2023-11-07 | |
| http://www.debian.org/security/2016/dsa-3649 | 2023-11-07 | |
| http://www.debian.org/security/2016/dsa-3650 | 2023-11-07 | |
| http://www.ubuntu.com/usn/USN-3064-1 | 2023-11-07 | |
| http://www.ubuntu.com/usn/USN-3065-1 | 2023-11-07 | |
| https://lists.gnupg.org/pipermail/gnupg-announce/2016q3/000395.html | 2023-11-07 | |
| https://security.gentoo.org/glsa/201610-04 | 2023-11-07 | |
| https://security.gentoo.org/glsa/201612-01 | 2023-11-07 | |
| https://access.redhat.com/security/cve/CVE-2016-6313 | 2016-11-08 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1366105 | 2016-11-08 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Gnupg Search vendor "Gnupg" | Libgcrypt Search vendor "Gnupg" for product "Libgcrypt" | <= 1.5.3 Search vendor "Gnupg" for product "Libgcrypt" and version " <= 1.5.3" | - |
Affected
| ||||||
| Gnupg Search vendor "Gnupg" | Libgcrypt Search vendor "Gnupg" for product "Libgcrypt" | 1.6.0 Search vendor "Gnupg" for product "Libgcrypt" and version "1.6.0" | - |
Affected
| ||||||
| Gnupg Search vendor "Gnupg" | Libgcrypt Search vendor "Gnupg" for product "Libgcrypt" | 1.6.1 Search vendor "Gnupg" for product "Libgcrypt" and version "1.6.1" | - |
Affected
| ||||||
| Gnupg Search vendor "Gnupg" | Libgcrypt Search vendor "Gnupg" for product "Libgcrypt" | 1.6.2 Search vendor "Gnupg" for product "Libgcrypt" and version "1.6.2" | - |
Affected
| ||||||
| Gnupg Search vendor "Gnupg" | Libgcrypt Search vendor "Gnupg" for product "Libgcrypt" | 1.6.3 Search vendor "Gnupg" for product "Libgcrypt" and version "1.6.3" | - |
Affected
| ||||||
| Gnupg Search vendor "Gnupg" | Libgcrypt Search vendor "Gnupg" for product "Libgcrypt" | 1.6.4 Search vendor "Gnupg" for product "Libgcrypt" and version "1.6.4" | - |
Affected
| ||||||
| Gnupg Search vendor "Gnupg" | Libgcrypt Search vendor "Gnupg" for product "Libgcrypt" | 1.6.5 Search vendor "Gnupg" for product "Libgcrypt" and version "1.6.5" | - |
Affected
| ||||||
| Gnupg Search vendor "Gnupg" | Libgcrypt Search vendor "Gnupg" for product "Libgcrypt" | 1.7.0 Search vendor "Gnupg" for product "Libgcrypt" and version "1.7.0" | - |
Affected
| ||||||
| Gnupg Search vendor "Gnupg" | Libgcrypt Search vendor "Gnupg" for product "Libgcrypt" | 1.7.1 Search vendor "Gnupg" for product "Libgcrypt" and version "1.7.1" | - |
Affected
| ||||||
| Gnupg Search vendor "Gnupg" | Libgcrypt Search vendor "Gnupg" for product "Libgcrypt" | 1.7.2 Search vendor "Gnupg" for product "Libgcrypt" and version "1.7.2" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
| ||||||
| Gnupg Search vendor "Gnupg" | Gnupg Search vendor "Gnupg" for product "Gnupg" | <= 1.4.14 Search vendor "Gnupg" for product "Gnupg" and version " <= 1.4.14" | - |
Affected
| ||||||