CVE-2015-3405
ntp: ntp-keygen may generate non-random symmetric keys on big-endian systems
Severity Score
7.5
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the temp variable is between 0x20 and 0x7f and not #, which might allow remote attackers to obtain the value of generated MD5 keys via a brute force attack with the 93 possible keys.
ntp-keygen en ntp en versiones 4.2.8px anteriores a la 4.2.8p2-RC2 y en versiones 4.3.x anteriores a la 4.3.12 no genera claves MD5 con la suficiente entropía en máquinas big endian cuando el byte de menor orden de la variable temp se sitúa entre 0x20 y 0x7f y no #. Esto podría permitir que atacantes remotos obtengan el valor de las claves MD5 generadas mediante un ataque de fuerza bruta con las 93 claves posibles.
A flaw was found in the way the ntp-keygen utility generated MD5 symmetric keys on big-endian systems. An attacker could possibly use this flaw to guess generated MD5 keys, which could then be used to spoof an NTP client or server.
*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
- 2015-04-23 CVE Reserved
- 2015-07-22 CVE Published
- 2023-11-13 EPSS Updated
- 2024-08-06 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-330: Use of Insufficiently Random Values
- CWE-331: Insufficient Entropy
CAPEC
References (15)
| URL | Tag | Source |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2015/04/23/14 | Mailing List |
|
| http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html | X_refsource_confirm |
|
| http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html | X_refsource_confirm |
|
| http://www.securityfocus.com/bid/74045 | Third Party Advisory | |
| https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03886en_us | X_refsource_confirm |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1210324 | 2015-11-19 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.2.8 Search vendor "Ntp" for product "Ntp" and version "4.2.8" | p1 |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.2.8 Search vendor "Ntp" for product "Ntp" and version "4.2.8" | p2 |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.2.8 Search vendor "Ntp" for product "Ntp" and version "4.2.8" | p2-rc1 |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.0 Search vendor "Ntp" for product "Ntp" and version "4.3.0" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.1 Search vendor "Ntp" for product "Ntp" and version "4.3.1" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.2 Search vendor "Ntp" for product "Ntp" and version "4.3.2" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.3 Search vendor "Ntp" for product "Ntp" and version "4.3.3" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.4 Search vendor "Ntp" for product "Ntp" and version "4.3.4" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.5 Search vendor "Ntp" for product "Ntp" and version "4.3.5" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.6 Search vendor "Ntp" for product "Ntp" and version "4.3.6" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.7 Search vendor "Ntp" for product "Ntp" and version "4.3.7" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.8 Search vendor "Ntp" for product "Ntp" and version "4.3.8" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.9 Search vendor "Ntp" for product "Ntp" and version "4.3.9" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.10 Search vendor "Ntp" for product "Ntp" and version "4.3.10" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.11 Search vendor "Ntp" for product "Ntp" and version "4.3.11" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0" | - |
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
| ||||||
| Opensuse Search vendor "Opensuse" | Suse Linux Enterprise Server Search vendor "Opensuse" for product "Suse Linux Enterprise Server" | 11.0 Search vendor "Opensuse" for product "Suse Linux Enterprise Server" and version "11.0" | sp3 |
Affected
| ||||||
| Opensuse Project Search vendor "Opensuse Project" | Suse Linux Enterprise Desktop Search vendor "Opensuse Project" for product "Suse Linux Enterprise Desktop" | 11.0 Search vendor "Opensuse Project" for product "Suse Linux Enterprise Desktop" and version "11.0" | sp3 |
Affected
| ||||||
| Suse Search vendor "Suse" | Suse Linux Enterprise Server Search vendor "Suse" for product "Suse Linux Enterprise Server" | 11.0 Search vendor "Suse" for product "Suse Linux Enterprise Server" and version "11.0" | sp3, vmware |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 21 Search vendor "Fedoraproject" for product "Fedora" and version "21" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop" | 6.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "6.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux For Ibm Z Systems Search vendor "Redhat" for product "Enterprise Linux For Ibm Z Systems" | 6.0 Search vendor "Redhat" for product "Enterprise Linux For Ibm Z Systems" and version "6.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux For Power Big Endian Search vendor "Redhat" for product "Enterprise Linux For Power Big Endian" | 6.0 Search vendor "Redhat" for product "Enterprise Linux For Power Big Endian" and version "6.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux For Scientific Computing Search vendor "Redhat" for product "Enterprise Linux For Scientific Computing" | 6.0 Search vendor "Redhat" for product "Enterprise Linux For Scientific Computing" and version "6.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server" | 6.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "6.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server From Rhui 6 Search vendor "Redhat" for product "Enterprise Linux Server From Rhui 6" | 6.0 Search vendor "Redhat" for product "Enterprise Linux Server From Rhui 6" and version "6.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation" | 6.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "6.0" | - |
Affected
| ||||||