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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:24867
[Rus]
Version
2
Class
patch
ALTXid
159025
Language
English
Severity
Medium
Title
ALAS-2017-793 -- security update for krb5
Description
A NULL pointer dereference flaw was found in MIT Kerberos kadmind service.
An authenticated attacker with permission to modify a principal entry could use this flaw to cause kadmind to dereference a null pointer and crash by supplying an empty DB argument
to the modify_principal command, if kadmind was configured to use the LDAP KDB module. (CVE-2016-3119)
A NULL pointer dereference flaw was found in MIT Kerberos krb5kdc service. An authenticated attacker could use
this flaw to cause krb5kdc to dereference a null pointer and crash by making an S4U2Self request, if the restrict_anonymous_to_tgt option was set to true. (CVE-2016-3120)
Family
unix
Platform
Amazon Linux AMI
Product
krb5
Reference
VENDOR: ALAS-2017-793
VENDOR: ALAS-2017-793
Id:
ALAS-2017-793
Reference:
https://alas.aws.amazon.com/ALAS-2017-793.html
CVE: CVE-2016-3119
CVE: CVE-2016-3119
Id:
CVE-2016-3119
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3119
Comment
: The process_db_args function in plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in the LDAP KDB module in kadmind in MIT Kerberos 5 (aka krb5) through 1.13.4 and 1.14.x through 1.14.1 mishandles the DB argument, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request to modify a principal.
CVSSv2 Score:
3.5
Access vector:
NETWORK
Access complexity:
MEDIUM
Authentication:
SINGLE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:M/Au:S/C:N/I:N/A:P
CVSSv3 Score:
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
CVSSv3 Vector:
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE:
CWE-Other ()
References:
https://github.com/krb5/krb5/commit/08c642c09c38a9c6454ab43a9b53b2a89b9eef99 (CONFIRM)
openSUSE-SU-2016:1072 (SUSE)
openSUSE-SU-2016:0947 (SUSE)
1035399 (SECTRACK)
85392 (BID)
RHSA-2016:2591 (REDHAT)
[debian-lts-announce] 20180131 [SECURITY] [DLA 1265-1] krb5 security update (MLIST)
CVE: CVE-2016-3120
CVE: CVE-2016-3120
Id:
CVE-2016-3120
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3120
Comment
: The validate_as_request function in kdc_util.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.13.6 and 1.4.x before 1.14.3, when restrict_anonymous_to_tgt is enabled, uses an incorrect client data structure, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an S4U2Self request.
CVSSv2 Score:
4
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
SINGLE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:S/C:N/I:N/A:P
CVSSv3 Score:
6.5
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE:
476 (NULL Pointer Dereference)
References:
http://web.mit.edu/kerberos/krb5-1.13/ (CONFIRM)
http://krbdev.mit.edu/rt/Ticket/Display.html?id=8458 (CONFIRM)
https://github.com/krb5/krb5/commit/93b4a6306a0026cf1cc31ac4bd8a49ba5d034ba7 (CONFIRM)
http://web.mit.edu/kerberos/krb5-1.14/ (CONFIRM)
openSUSE-SU-2016:2268 (SUSE)
92132 (BID)
1036442 (SECTRACK)
RHSA-2016:2591 (REDHAT)
[debian-lts-announce] 20180131 [SECURITY] [DLA 1265-1] krb5 security update (MLIST)
FEDORA-2016-0674a3c372 ()
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