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DebianDEBIAN:DLA-2771-1:D1964

HistorySep 30, 2021 - 8:08 p.m.

[SECURITY] [DLA 2771-1] krb5 security update

2021-09-3020:08:58

lists.debian.org

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:N/I:N/A:P

0.003 Low

EPSS

Percentile

67.3%

JSON

Debian LTS Advisory DLA-2771-1 [email protected]
https://www.debian.org/lts/security/ Adrian Bunk
September 30, 2021 https://wiki.debian.org/LTS

Package : krb5
Version : 1.15-1+deb9u3
CVE ID : CVE-2018-5729 CVE-2018-5730 CVE-2018-20217 CVE-2021-37750
Debian Bug : 891869 917387 992607

Several vulnerabilities were fixed in MIT Kerberos,
a system for authenticating users and services on a network.

CVE-2018-5729
CVE-2018-5730

Fix flaws in LDAP DN checking.

CVE-2018-20217

Ignore password attributes for S4U2Self requests.

CVE-2021-37750

Fix KDC null deref on TGS inner body null server.

For Debian 9 stretch, these problems have been fixed in version
1.15-1+deb9u3.

We recommend that you upgrade your krb5 packages.

For the detailed security status of krb5 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/krb5

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
Debian11mipselkrb5-kdc-ldap< 1.18.3-6+deb11u1krb5-kdc-ldap_1.18.3-6+deb11u1_mipsel.deb
Debian11armelkrb5-k5tls-dbgsym< 1.18.3-6+deb11u1krb5-k5tls-dbgsym_1.18.3-6+deb11u1_armel.deb
Debian11i386libkadm5clnt-mit12< 1.18.3-6+deb11u1libkadm5clnt-mit12_1.18.3-6+deb11u1_i386.deb
Debian10mips64elkrb5-user-dbgsym< 1.17-3+deb10u3krb5-user-dbgsym_1.17-3+deb10u3_mips64el.deb
Debian11i386libkrad0< 1.18.3-6+deb11u1libkrad0_1.18.3-6+deb11u1_i386.deb
Debian10ppc64elkrb5-kpropd< 1.17-3+deb10u3krb5-kpropd_1.17-3+deb10u3_ppc64el.deb
Debian10arm64krb5-kpropd< 1.17-3+deb10u3krb5-kpropd_1.17-3+deb10u3_arm64.deb
Debian10armhfkrb5-k5tls-dbgsym< 1.17-3+deb10u3krb5-k5tls-dbgsym_1.17-3+deb10u3_armhf.deb
Debian10mipslibkadm5clnt-mit11< 1.17-3+deb10u3libkadm5clnt-mit11_1.17-3+deb10u3_mips.deb
Debian11amd64libkadm5srv-mit12< 1.18.3-6+deb11u1libkadm5srv-mit12_1.18.3-6+deb11u1_amd64.deb

OS	Version	Architecture	Package	Version	Filename
Debian	11	mipsel	krb5-kdc-ldap	< 1.18.3-6+deb11u1	krb5-kdc-ldap_1.18.3-6+deb11u1_mipsel.deb
Debian	11	armel	krb5-k5tls-dbgsym	< 1.18.3-6+deb11u1	krb5-k5tls-dbgsym_1.18.3-6+deb11u1_armel.deb
Debian	11	i386	libkadm5clnt-mit12	< 1.18.3-6+deb11u1	libkadm5clnt-mit12_1.18.3-6+deb11u1_i386.deb
Debian	10	mips64el	krb5-user-dbgsym	< 1.17-3+deb10u3	krb5-user-dbgsym_1.17-3+deb10u3_mips64el.deb
Debian	11	i386	libkrad0	< 1.18.3-6+deb11u1	libkrad0_1.18.3-6+deb11u1_i386.deb
Debian	10	ppc64el	krb5-kpropd	< 1.17-3+deb10u3	krb5-kpropd_1.17-3+deb10u3_ppc64el.deb
Debian	10	arm64	krb5-kpropd	< 1.17-3+deb10u3	krb5-kpropd_1.17-3+deb10u3_arm64.deb
Debian	10	armhf	krb5-k5tls-dbgsym	< 1.17-3+deb10u3	krb5-k5tls-dbgsym_1.17-3+deb10u3_armhf.deb
Debian	10	mips	libkadm5clnt-mit11	< 1.17-3+deb10u3	libkadm5clnt-mit11_1.17-3+deb10u3_mips.deb
Debian	11	amd64	libkadm5srv-mit12	< 1.18.3-6+deb11u1	libkadm5srv-mit12_1.18.3-6+deb11u1_amd64.deb