High severity · published Aug 9, 2017
CVE-2015-3405
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…
7.5
CVSS
5.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.3% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
7.0; 8.0 · source: NVD
EL
Enterprise Linux Desktop · Redhat
6.0 · source: NVD
EL
Enterprise Linux For Ibm Z Systems · Redhat
6.0 · source: NVD
EL
Enterprise Linux For Power Big Endian · Redhat
6.0 · source: NVD
EL
Enterprise Linux For Scientific Computing · Redhat
6.0 · source: NVD
EL
Enterprise Linux Server · Redhat
6.0 · source: NVD
EL
Enterprise Linux Server From Rhui 6 · Redhat
6.0 · source: NVD
EL
Enterprise Linux Workstation · Redhat
6.0 · source: NVD
FE
Fedora · Fedoraproject
21 · source: NVD
NT
Ntp · Ntp
4.2.8; 4.2.8; 4.2.8; 4.3.0; 4.3.1; 4.3.2; +9 more · source: NVD
SL
Suse Linux Enterprise Desktop · Opensuse Project
11.0 · source: NVD
SL
Suse Linux Enterprise Server · Suse
11.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-3405
CVE.org
https://www.cve.org/CVERecord?id=CVE-2015-3405
Third Party Advisory
http://bk1.ntp.org/ntp-stable/?PAGE=patch&REV=55199296N2gFqH1Hm5GOnhrk9Ypygg
Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/156248.html
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00000.html
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-1459.html
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2231.html
Third Party Advisory
http://www.debian.org/security/2015/dsa-3223
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