CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
92.7%
Debian Security Advisory DSA-3912-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
July 16, 2017 https://www.debian.org/security/faq
Package : heimdal
CVE ID : CVE-2017-11103
Debian Bug : 868208
Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams reported that
Heimdal, an implementation of Kerberos 5 that aims to be compatible with
MIT Kerberos, trusts metadata taken from the unauthenticated plaintext
(Ticket), rather than the authenticated and encrypted KDC response. A
man-in-the-middle attacker can use this flaw to impersonate services to
the client.
See https://orpheus-lyre.info/ for details.
For the oldstable distribution (jessie), this problem has been fixed
in version 1.6~rc2+dfsg-9+deb8u1.
For the stable distribution (stretch), this problem has been fixed in
version 7.1.0+dfsg-13+deb9u1.
For the unstable distribution (sid), this problem has been fixed in
version 7.4.0.dfsg.1-1.
We recommend that you upgrade your heimdal packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: [email protected]
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
92.7%