4.7 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
5 Medium
AI Score
Confidence
High
6.5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
58.7%
Issue Overview:
MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to circumvent a DN containership check by supplying both a “linkdn” and “containerdn” database argument, or by supplying a DN string which is a left extension of a container DN string but is not hierarchically within the container DN.(CVE-2018-5730)
MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to cause a denial of service (NULL pointer dereference) or bypass a DN container check by supplying tagged data that is internal to the database module.(CVE-2018-5729)
Affected Packages:
krb5
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update krb5 to update your system.
New Packages:
aarch64:
krb5-devel-1.15.1-20.amzn2.0.1.aarch64
krb5-libs-1.15.1-20.amzn2.0.1.aarch64
krb5-server-1.15.1-20.amzn2.0.1.aarch64
krb5-server-ldap-1.15.1-20.amzn2.0.1.aarch64
krb5-workstation-1.15.1-20.amzn2.0.1.aarch64
krb5-pkinit-1.15.1-20.amzn2.0.1.aarch64
libkadm5-1.15.1-20.amzn2.0.1.aarch64
krb5-debuginfo-1.15.1-20.amzn2.0.1.aarch64
i686:
krb5-devel-1.15.1-20.amzn2.0.1.i686
krb5-libs-1.15.1-20.amzn2.0.1.i686
krb5-server-1.15.1-20.amzn2.0.1.i686
krb5-server-ldap-1.15.1-20.amzn2.0.1.i686
krb5-workstation-1.15.1-20.amzn2.0.1.i686
krb5-pkinit-1.15.1-20.amzn2.0.1.i686
libkadm5-1.15.1-20.amzn2.0.1.i686
krb5-debuginfo-1.15.1-20.amzn2.0.1.i686
src:
krb5-1.15.1-20.amzn2.0.1.src
x86_64:
krb5-devel-1.15.1-20.amzn2.0.1.x86_64
krb5-libs-1.15.1-20.amzn2.0.1.x86_64
krb5-server-1.15.1-20.amzn2.0.1.x86_64
krb5-server-ldap-1.15.1-20.amzn2.0.1.x86_64
krb5-workstation-1.15.1-20.amzn2.0.1.x86_64
krb5-pkinit-1.15.1-20.amzn2.0.1.x86_64
libkadm5-1.15.1-20.amzn2.0.1.x86_64
krb5-debuginfo-1.15.1-20.amzn2.0.1.x86_64
Red Hat: CVE-2018-5729, CVE-2018-5730
Mitre: CVE-2018-5729, CVE-2018-5730
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 2 | aarch64 | krb5-devel | < 1.15.1-20.amzn2.0.1 | krb5-devel-1.15.1-20.amzn2.0.1.aarch64.rpm |
Amazon Linux | 2 | aarch64 | krb5-libs | < 1.15.1-20.amzn2.0.1 | krb5-libs-1.15.1-20.amzn2.0.1.aarch64.rpm |
Amazon Linux | 2 | aarch64 | krb5-server | < 1.15.1-20.amzn2.0.1 | krb5-server-1.15.1-20.amzn2.0.1.aarch64.rpm |
Amazon Linux | 2 | aarch64 | krb5-server-ldap | < 1.15.1-20.amzn2.0.1 | krb5-server-ldap-1.15.1-20.amzn2.0.1.aarch64.rpm |
Amazon Linux | 2 | aarch64 | krb5-workstation | < 1.15.1-20.amzn2.0.1 | krb5-workstation-1.15.1-20.amzn2.0.1.aarch64.rpm |
Amazon Linux | 2 | aarch64 | krb5-pkinit | < 1.15.1-20.amzn2.0.1 | krb5-pkinit-1.15.1-20.amzn2.0.1.aarch64.rpm |
Amazon Linux | 2 | aarch64 | libkadm5 | < 1.15.1-20.amzn2.0.1 | libkadm5-1.15.1-20.amzn2.0.1.aarch64.rpm |
Amazon Linux | 2 | aarch64 | krb5-debuginfo | < 1.15.1-20.amzn2.0.1 | krb5-debuginfo-1.15.1-20.amzn2.0.1.aarch64.rpm |
Amazon Linux | 2 | i686 | krb5-devel | < 1.15.1-20.amzn2.0.1 | krb5-devel-1.15.1-20.amzn2.0.1.i686.rpm |
Amazon Linux | 2 | i686 | krb5-libs | < 1.15.1-20.amzn2.0.1 | krb5-libs-1.15.1-20.amzn2.0.1.i686.rpm |
4.7 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
5 Medium
AI Score
Confidence
High
6.5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
58.7%