[SECURITY] [DLA 1643-1] krb5 security update

2019-01-2522:46:23

lists.debian.org

125

CVSS2

6.5

Attack Vector

NETWORK

Attack 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

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

AI Score

Confidence

Low

EPSS

0.003

Percentile

71.1%

JSON

Package : krb5
Version : 1.12.1+dfsg-19+deb8u5
CVE ID : CVE-2018-5729 CVE-2018-5730 CVE-2018-20217

krb5, a MIT Kerberos implementation, had several flaws in LDAP DN
checking, which could be used to circumvent a DN containership check by
supplying special parameters to some calls.

Further an attacker could crash the KDC by making S4U2Self requests.

For Debian 8 "Jessie",
these problems have been fixed in version 1.12.1+dfsg-19+deb8u5.

We recommend that you upgrade your krb5 packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

OSVersionArchitecturePackageVersionFilename
Debian8armhflibkrad0< 1.12.1+dfsg-19+deb8u5libkrad0_1.12.1+dfsg-19+deb8u5_armhf.deb
Debian8i386krb5-pkinit< 1.12.1+dfsg-19+deb8u5krb5-pkinit_1.12.1+dfsg-19+deb8u5_i386.deb
Debian8armhfkrb5-user< 1.12.1+dfsg-19+deb8u5krb5-user_1.12.1+dfsg-19+deb8u5_armhf.deb
Debian9armelkrb5-otp< 1.15-1+deb9u3krb5-otp_1.15-1+deb9u3_armel.deb
Debian9amd64krb5-gss-samples< 1.15-1+deb9u3krb5-gss-samples_1.15-1+deb9u3_amd64.deb
Debian9armhflibk5crypto3< 1.15-1+deb9u3libk5crypto3_1.15-1+deb9u3_armhf.deb
Debian8amd64krb5-multidev< 1.12.1+dfsg-19+deb8u5krb5-multidev_1.12.1+dfsg-19+deb8u5_amd64.deb
Debian9amd64krb5-k5tls< 1.15-1+deb9u3krb5-k5tls_1.15-1+deb9u3_amd64.deb
Debian9armelkrb5-pkinit< 1.15-1+deb9u3krb5-pkinit_1.15-1+deb9u3_armel.deb
Debian9armelkrb5-gss-samples< 1.15-1+deb9u3krb5-gss-samples_1.15-1+deb9u3_armel.deb

OS	Version	Architecture	Package	Version	Filename
Debian	8	armhf	libkrad0	< 1.12.1+dfsg-19+deb8u5	libkrad0_1.12.1+dfsg-19+deb8u5_armhf.deb
Debian	8	i386	krb5-pkinit	< 1.12.1+dfsg-19+deb8u5	krb5-pkinit_1.12.1+dfsg-19+deb8u5_i386.deb
Debian	8	armhf	krb5-user	< 1.12.1+dfsg-19+deb8u5	krb5-user_1.12.1+dfsg-19+deb8u5_armhf.deb
Debian	9	armel	krb5-otp	< 1.15-1+deb9u3	krb5-otp_1.15-1+deb9u3_armel.deb
Debian	9	amd64	krb5-gss-samples	< 1.15-1+deb9u3	krb5-gss-samples_1.15-1+deb9u3_amd64.deb
Debian	9	armhf	libk5crypto3	< 1.15-1+deb9u3	libk5crypto3_1.15-1+deb9u3_armhf.deb
Debian	8	amd64	krb5-multidev	< 1.12.1+dfsg-19+deb8u5	krb5-multidev_1.12.1+dfsg-19+deb8u5_amd64.deb
Debian	9	amd64	krb5-k5tls	< 1.15-1+deb9u3	krb5-k5tls_1.15-1+deb9u3_amd64.deb
Debian	9	armel	krb5-pkinit	< 1.15-1+deb9u3	krb5-pkinit_1.15-1+deb9u3_armel.deb
Debian	9	armel	krb5-gss-samples	< 1.15-1+deb9u3	krb5-gss-samples_1.15-1+deb9u3_armel.deb