ID

VAR-201301-0217


CVE

CVE-2012-2291


TITLE

EMC Avamar Client and EMC Avamar Plugin Vulnerability gained in

Trust: 0.8

sources: JVNDB: JVNDB-2013-001223

DESCRIPTION

EMC Avamar Client 4.x, 5.x, and 6.x on HP-UX and Mac OS X, and the EMC Avamar plugin 4.x, 5.x, and 6.x for Oracle, uses world-writable permissions for cache directories, which allows local users to gain privileges via an unspecified symlink attack. EMC Avamar backup client is prone to an insecure file-permissions vulnerability. A local attacker can exploit this issue to gain escalated privileges. This may aid in further attacks. The following versions are affected: EMC Avamar version 4.x EMC Avamar version 5.x EMC Avamar version 6.x. The vulnerability stems from the fact that the cache directory uses world-writable permissions. Summary: Due to a vulnerability, described in detail below, the Avamar client leaves certain directories and files as world writable. The presence of world writable directories and files may inadvertently result in elevation of privileges by a user who has access to the local file system. Details: The Avamar affected client process runs as root and after each backup it leaves the cache files as world readable and writable. While the cache files themselves do not contain sensitive information, when the parent directory is world-writable, the cache files could be used by an attacker to elevate the privileges when a system-level backup is performed. The non-root user can create symbolic links to obtain unauthorized access to files on the affected system. Note: This vulnerability information is currently public. Resolution: The following workaround steps must be performed to mitigate the risk until the full fix is available from EMC. For HP-UX clients: The permissions of the /opt/AVMRclnt/var directory should be set to 0755. Log into the HP-UX client as the \x93root\x94 user and type the following command: chmod 0755 /opt/AVMRclnt/var For Mac OS clients: The permissions of the /var/avamar directory should be set to 0755. Log into the Mac client as the \x93root\x94 user and type the following command: chmod 0755 /var/avamar For Oracle clients: The following procedure only applies to clients where the directory permissions of the Avamar var directory (/usr/local/avamar/var or /opt/AVMRclnt/var) have been manually changed after installation of the Avamar plugin for Oracle: The permissions of the /usr/local/avamar/var should be set to 0775 with the group ownership set to the oracle group. Log into the Oracle client as the \x93root\x94 user and type either of the following pairs of commands: On Linux and Unix Oracle clients other than Solaris and HP-UX: chmod 0775 /usr/local/avamar/var chgrp oracle /usr/local/avamar/var On Solaris and HP-UX Oracle clients: chmod 0775 /opt/AVMRclnt/var chgrp oracle /opt/AVMRclnt/var Other Avamar clients: Verify that the permissions of the Avamar var directory (/usr/local/avamar/var or /opt/AVMRclnt/var) on Linux and Unix clients are not modified as a result of a support or locally-performed procedure. The permissions should be set to 0755. If you have any questions or concerns about running the above commands please contact EMC Technical Support at http://www.emc.com/contact. Read and use the information in this EMC Security Advisory to assist in avoiding any situation that might arise from the problems described herein. If you have any questions regarding this product alert, contact EMC Software Technical Support at 1-877-534-2867. Because the view is restricted based on customer agreements, you may not have permission to view certain downloads. Should you not see a software download you believe you should have access to, follow the instructions in EMC Knowledgebase solution emc116045. For an explanation of Severity Ratings, refer to EMC Knowledgebase solution emc218831. EMC recommends all customers take into account both the base score and any relevant temporal and environmental scores which may impact the potential severity associated with particular security vulnerability. EMC Corporation distributes EMC Security Advisories, in order to bring to the attention of users of the affected EMC products, important security information. EMC recommends that all users determine the applicability of this information to their individual situations and take appropriate action. The information set forth herein is provided "as is" without warranty of any kind. EMC disclaims all warranties, either express or implied, including the warranties of merchantability, fitness for a particular purpose, title and non-infringement. In no event, shall EMC or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if EMC or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation may not apply. EMC Product Security Response Center Security_Alert@EMC.COM http://www.emc.com/contact-us/contact/product-security-response-center.html -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (Cygwin) iEYEARECAAYFAlD5pCUACgkQtjd2rKp+ALwMFACgnLq53HoHUZp9b+oWbL1Z6RHq ZakAnjedCQIEXto4r6dgCALoSkWBOQm5 =gIkA -----END PGP SIGNATURE-----

Trust: 2.07

sources: NVD: CVE-2012-2291 // JVNDB: JVNDB-2013-001223 // BID: 57005 // VULHUB: VHN-55572 // PACKETSTORM: 119685

AFFECTED PRODUCTS

vendor:emcmodel:avamarscope:eqversion:5.0.4-26

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vendor:emcmodel:avamarscope:eqversion:5.0.0-407

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vendor:emcmodel:avamarscope:eqversion:5.0

Trust: 1.9

vendor:emcmodel:avamar pluginscope:eqversion:4.0

Trust: 1.6

vendor:emcmodel:avamarscope:eqversion:6.0

Trust: 1.6

vendor:emcmodel:avamar pluginscope:eqversion:6.0

Trust: 1.6

vendor:emcmodel:avamar pluginscope:eqversion:5.0

Trust: 1.6

vendor:emcmodel:avamar pluginscope:eqversion:6.1

Trust: 1.6

vendor:emcmodel:avamarscope:eqversion:4.1

Trust: 1.3

vendor:emcmodel:avamarscope:eqversion:4.0

Trust: 1.0

vendor:dell emc old emcmodel:avamarscope:eqversion:hp-ux client 4.x

Trust: 0.8

vendor:dell emc old emcmodel:avamarscope:eqversion:hp-ux client 5.x

Trust: 0.8

vendor:dell emc old emcmodel:avamarscope:eqversion:hp-ux client 6.x

Trust: 0.8

vendor:dell emc old emcmodel:avamarscope:eqversion:mac os client 4.x

Trust: 0.8

vendor:dell emc old emcmodel:avamarscope:eqversion:mac os client 5.x

Trust: 0.8

vendor:dell emc old emcmodel:avamarscope:eqversion:mac os client 6.x

Trust: 0.8

vendor:dell emc old emcmodel:avamar pluginscope:eqversion:for oracle 4.x

Trust: 0.8

vendor:dell emc old emcmodel:avamar pluginscope:eqversion:for oracle 5.x

Trust: 0.8

vendor:dell emc old emcmodel:avamar pluginscope:eqversion:for oracle 6.x

Trust: 0.8

vendor:emcmodel:avamarscope:eqversion:5.0.3

Trust: 0.3

vendor:emcmodel:avamarscope:eqversion:5.0.2

Trust: 0.3

vendor:emcmodel:avamarscope:eqversion:4.1.2

Trust: 0.3

vendor:emcmodel:avamarscope:eqversion:5.0.4

Trust: 0.3

vendor:emcmodel:avamarscope:eqversion:5.0.3-29

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vendor:emcmodel:avamarscope:eqversion:5.0.2-41

Trust: 0.3

vendor:emcmodel:avamarscope:eqversion:5.0.1-32

Trust: 0.3

vendor:emcmodel:avamarscope:eqversion:5.0.1

Trust: 0.3

vendor:emcmodel:avamar sp1scope:eqversion:5.0

Trust: 0.3

vendor:emcmodel:avamarscope:eqversion:4.1.2-33

Trust: 0.3

vendor:emcmodel:avamarscope:eqversion:4.1.1-340

Trust: 0.3

vendor:emcmodel:avamarscope:eqversion:4.1.1

Trust: 0.3

vendor:emcmodel:avamarscope:eqversion:4.1.0-1470

Trust: 0.3

sources: BID: 57005 // JVNDB: JVNDB-2013-001223 // CNNVD: CNNVD-201301-400 // NVD: CVE-2012-2291

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2012-2291
value: HIGH

Trust: 1.0

NVD: CVE-2012-2291
value: HIGH

Trust: 0.8

CNNVD: CNNVD-201301-400
value: HIGH

Trust: 0.6

VULHUB: VHN-55572
value: HIGH

Trust: 0.1

nvd@nist.gov: CVE-2012-2291
severity: HIGH
baseScore: 7.2
vectorString: AV:L/AC:L/AU:N/C:C/I:C/A:C
accessVector: LOCAL
accessComplexity: LOW
authentication: NONE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 3.9
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.8

VULHUB: VHN-55572
severity: HIGH
baseScore: 7.2
vectorString: AV:L/AC:L/AU:N/C:C/I:C/A:C
accessVector: LOCAL
accessComplexity: LOW
authentication: NONE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 3.9
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

sources: VULHUB: VHN-55572 // JVNDB: JVNDB-2013-001223 // CNNVD: CNNVD-201301-400 // NVD: CVE-2012-2291

PROBLEMTYPE DATA

problemtype:CWE-264

Trust: 1.9

sources: VULHUB: VHN-55572 // JVNDB: JVNDB-2013-001223 // NVD: CVE-2012-2291

THREAT TYPE

local

Trust: 1.5

sources: BID: 57005 // CNNVD: CNNVD-201212-309 // CNNVD: CNNVD-201301-400

TYPE

permissions and access control

Trust: 0.6

sources: CNNVD: CNNVD-201301-400

CONFIGURATIONS

sources: JVNDB: JVNDB-2013-001223

EXPLOIT AVAILABILITY

sources: VULHUB: VHN-55572

PATCH

title:Avamarurl:http://www.emc.com/backup-and-recovery/avamar/avamar.htm

Trust: 0.8

sources: JVNDB: JVNDB-2013-001223

EXTERNAL IDS

db:NVDid:CVE-2012-2291

Trust: 2.9

db:BIDid:57005

Trust: 1.0

db:JVNDBid:JVNDB-2013-001223

Trust: 0.8

db:CNNVDid:CNNVD-201301-400

Trust: 0.7

db:CNNVDid:CNNVD-201212-309

Trust: 0.6

db:BUGTRAQid:20130121 RE: EMC AVAMAR: WORLD WRITABLE CACHE FILES

Trust: 0.6

db:PACKETSTORMid:119685

Trust: 0.2

db:VULHUBid:VHN-55572

Trust: 0.1

sources: VULHUB: VHN-55572 // BID: 57005 // JVNDB: JVNDB-2013-001223 // PACKETSTORM: 119685 // CNNVD: CNNVD-201212-309 // CNNVD: CNNVD-201301-400 // NVD: CVE-2012-2291

REFERENCES

url:http://archives.neohapsis.com/archives/bugtraq/2013-01/0086.html

Trust: 1.7

url:http://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2012-2291

Trust: 0.8

url:http://web.nvd.nist.gov/view/vuln/detail?vulnid=cve-2012-2291

Trust: 0.8

url:http://www.securityfocus.com/bid/57005

Trust: 0.6

url:http://www.emc.com/products/detail/software/avamar.htm

Trust: 0.3

url:http://www.emc.com/contact-us/contact/product-security-response-center.html

Trust: 0.1

url:https://nvd.nist.gov/vuln/detail/cve-2012-2291

Trust: 0.1

url:http://www.emc.com/contact.

Trust: 0.1

sources: VULHUB: VHN-55572 // BID: 57005 // JVNDB: JVNDB-2013-001223 // PACKETSTORM: 119685 // CNNVD: CNNVD-201212-309 // CNNVD: CNNVD-201301-400 // NVD: CVE-2012-2291

CREDITS

EMC

Trust: 0.9

sources: BID: 57005 // CNNVD: CNNVD-201212-309

SOURCES

db:VULHUBid:VHN-55572
db:BIDid:57005
db:JVNDBid:JVNDB-2013-001223
db:PACKETSTORMid:119685
db:CNNVDid:CNNVD-201212-309
db:CNNVDid:CNNVD-201301-400
db:NVDid:CVE-2012-2291

LAST UPDATE DATE

2024-11-23T21:55:39.369000+00:00


SOURCES UPDATE DATE

db:VULHUBid:VHN-55572date:2013-01-22T00:00:00
db:BIDid:57005date:2013-06-28T12:20:00
db:JVNDBid:JVNDB-2013-001223date:2013-01-23T00:00:00
db:CNNVDid:CNNVD-201212-309date:2012-12-24T00:00:00
db:CNNVDid:CNNVD-201301-400date:2013-01-22T00:00:00
db:NVDid:CVE-2012-2291date:2024-11-21T01:38:49.603

SOURCES RELEASE DATE

db:VULHUBid:VHN-55572date:2013-01-21T00:00:00
db:BIDid:57005date:2012-12-19T00:00:00
db:JVNDBid:JVNDB-2013-001223date:2013-01-23T00:00:00
db:PACKETSTORMid:119685date:2013-01-21T19:36:19
db:CNNVDid:CNNVD-201212-309date:2012-12-24T00:00:00
db:CNNVDid:CNNVD-201301-400date:2013-01-22T00:00:00
db:NVDid:CVE-2012-2291date:2013-01-21T21:55:00.887