[SECURITY] [DLA 2437-1] krb5 security update

2020-11-0712:38:26

lists.debian.org

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.005 Low

EPSS

Percentile

76.5%

JSON

Debian LTS Advisory DLA-2437-1 [email protected]
https://www.debian.org/lts/security/ Chris Lamb
November 07, 2020 https://wiki.debian.org/LTS

Package : krb5
Version : 1.15-1+deb9u2
CVE ID : CVE-2020-28196
Debian Bug : #973880

It was discovered that there was a denial of service vulnerability in
the MIT Kerberos network authentication system, krb5. The lack of a
limit in the ASN.1 decoder could lead to infinite recursion and allow
an attacker to overrun the stack and cause the process to crash.

For Debian 9 "Stretch", this problem has been fixed in version
1.15-1+deb9u2.

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
Debian10armelkrb5-gss-samples< 1.17-3+deb10u1krb5-gss-samples_1.17-3+deb10u1_armel.deb
Debian10mipselkrb5-otp< 1.17-3+deb10u1krb5-otp_1.17-3+deb10u1_mipsel.deb
Debian9arm64libkrb5support0< 1.15-1+deb9u2libkrb5support0_1.15-1+deb9u2_arm64.deb
Debian9armhflibkrb5-3< 1.15-1+deb9u2libkrb5-3_1.15-1+deb9u2_armhf.deb
Debian9armhflibkadm5clnt-mit11< 1.15-1+deb9u2libkadm5clnt-mit11_1.15-1+deb9u2_armhf.deb
Debian9armhfkrb5-kdc-ldap< 1.15-1+deb9u2krb5-kdc-ldap_1.15-1+deb9u2_armhf.deb
Debian10armelkrb5-otp< 1.17-3+deb10u1krb5-otp_1.17-3+deb10u1_armel.deb
Debian10armelkrb5-pkinit-dbgsym< 1.17-3+deb10u1krb5-pkinit-dbgsym_1.17-3+deb10u1_armel.deb
Debian10mipskrb5-gss-samples-dbgsym< 1.17-3+deb10u1krb5-gss-samples-dbgsym_1.17-3+deb10u1_mips.deb
Debian10arm64krb5-user< 1.17-3+deb10u1krb5-user_1.17-3+deb10u1_arm64.deb

OS	Version	Architecture	Package	Version	Filename
Debian	10	armel	krb5-gss-samples	< 1.17-3+deb10u1	krb5-gss-samples_1.17-3+deb10u1_armel.deb
Debian	10	mipsel	krb5-otp	< 1.17-3+deb10u1	krb5-otp_1.17-3+deb10u1_mipsel.deb
Debian	9	arm64	libkrb5support0	< 1.15-1+deb9u2	libkrb5support0_1.15-1+deb9u2_arm64.deb
Debian	9	armhf	libkrb5-3	< 1.15-1+deb9u2	libkrb5-3_1.15-1+deb9u2_armhf.deb
Debian	9	armhf	libkadm5clnt-mit11	< 1.15-1+deb9u2	libkadm5clnt-mit11_1.15-1+deb9u2_armhf.deb
Debian	9	armhf	krb5-kdc-ldap	< 1.15-1+deb9u2	krb5-kdc-ldap_1.15-1+deb9u2_armhf.deb
Debian	10	armel	krb5-otp	< 1.17-3+deb10u1	krb5-otp_1.17-3+deb10u1_armel.deb
Debian	10	armel	krb5-pkinit-dbgsym	< 1.17-3+deb10u1	krb5-pkinit-dbgsym_1.17-3+deb10u1_armel.deb
Debian	10	mips	krb5-gss-samples-dbgsym	< 1.17-3+deb10u1	krb5-gss-samples-dbgsym_1.17-3+deb10u1_mips.deb
Debian	10	arm64	krb5-user	< 1.17-3+deb10u1	krb5-user_1.17-3+deb10u1_arm64.deb