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Mandriva Linux Security Advisory : krb5 (MDVSA-2015:069)

high Nessus Plugin ID 82322

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Synopsis

The remote Mandriva Linux host is missing one or more security updates.

Description

Multiple vulnerabilities has been discovered and corrected in krb5 :

The krb5_gss_process_context_token function in lib/gssapi/krb5/process_context_token.c in the libgssapi_krb5 library in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly maintain security-context handles, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via crafted GSSAPI traffic, as demonstrated by traffic to kadmind (CVE-2014-5352).

MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that a krb5_read_message data field is represented as a string ending with a '\0' character, which allows remote attackers to (1) cause a denial of service (NULL pointer dereference) via a zero-byte version string or (2) cause a denial of service (out-of-bounds read) by omitting the '\0' character, related to appl/user_user/server.c and lib/krb5/krb/recvauth.c (CVE-2014-5355).

The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc.c in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly handle partial XDR deserialization, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via malformed XDR data, as demonstrated by data sent to kadmind (CVE-2014-9421).

The check_rpcsec_auth function in kadmin/server/kadm_rpc_svc.c in kadmind in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 allows remote authenticated users to bypass a kadmin/* authorization check and obtain administrative access by leveraging access to a two-component principal with an initial kadmind substring, as demonstrated by a ka/x principal (CVE-2014-9422).

The svcauth_gss_accept_sec_context function in lib/rpc/svc_auth_gss.c in MIT Kerberos 5 (aka krb5) 1.11.x through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 transmits uninitialized interposer data to clients, which allows remote attackers to obtain sensitive information from process heap memory by sniffing the network for data in a handle field (CVE-2014-9423).

The updated packages provides a solution for these security issues.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 82322

File Name: mandriva_MDVSA-2015-069.nasl

Version: 1.8

Type: local

Published: 3/30/2015

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:mandriva:linux:krb5, p-cpe:/a:mandriva:linux:krb5-pkinit-openssl, p-cpe:/a:mandriva:linux:krb5-server, p-cpe:/a:mandriva:linux:krb5-server-ldap, p-cpe:/a:mandriva:linux:krb5-workstation, p-cpe:/a:mandriva:linux:lib64krb53, p-cpe:/a:mandriva:linux:lib64krb53-devel, cpe:/o:mandriva:business_server:1, cpe:/o:mandriva:business_server:2

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Mandrake/release, Host/Mandrake/rpm-list

Patch Publication Date: 3/27/2015

Reference Information

CVE: CVE-2014-5352, CVE-2014-5355, CVE-2014-9421, CVE-2014-9422, CVE-2014-9423

MDVSA: 2015:069