Details of VAR-201706-0423

ID

VAR-201706-0423

CVE

CVE-2017-2193

TITLE

Installer of Tera Term may insecurely load Dynamic Link Libraries

Trust: 0.8

sources: JVNDB: JVNDB-2017-000108

DESCRIPTION

Untrusted search path vulnerability in the installer of Tera Term 4.94 and earlier allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory. Eili Masami of Tachibana Lab. reported this vulnerability to IPA. JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.Arbitrary code may be executed with the privilege of the user invoking the installer. TeraTerm is a terminal emulator that supports serial port, telnet and SSH connections. Installer is one of the installers. An attacker could exploit the vulnerability with a malicious DLL in the directory to gain access. Tera Term Installer is prone to a remote code-execution vulnerability. A remote attacker can leverage this issue to execute arbitrary code in the context of the affected application. Tera Term Installer 4.94 and prior versions are vulnerable

Trust: 2.43

sources: NVD: CVE-2017-2193 // JVNDB: JVNDB-2017-000108 // CNVD: CNVD-2017-11053 // BID: 98807

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2017-11053

AFFECTED PRODUCTS

vendor:	tera term	model:	tera term	scope:	lte	version:	4.94	Trust: 1.0
vendor:	teraterm	model:	the installer of tera term	scope:	lte	version:	4.94	Trust: 0.8
vendor:	teraterm	model:	project tera term	scope:	lte	version:	<=4.94	Trust: 0.6
vendor:	tera term	model:	tera term	scope:	eq	version:	4.94	Trust: 0.6
vendor:	teraterm	model:	project tera term installer	scope:	eq	version:	4.94	Trust: 0.3

sources: CNVD: CNVD-2017-11053 // BID: 98807 // JVNDB: JVNDB-2017-000108 // CNNVD: CNNVD-201706-146 // NVD: CVE-2017-2193

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2017-2193
value:	HIGH
Trust: 1.0
IPA:	JVNDB-2017-000108
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2017-11053
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-201706-146
value:	CRITICAL
Trust: 0.6

nvd@nist.gov:	CVE-2017-2193
severity:	HIGH
baseScore:	9.3
vectorString:	AV:N/AC:M/AU:N/C:C/I:C/A:C
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	8.6
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.0
IPA:	JVNDB-2017-000108
severity:	MEDIUM
baseScore:	6.8
vectorString:	AV:N/AC:M/AU:N/C:P/I:P/A:P
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	NONE
impactScore:	NONE
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.8
CNVD:	CNVD-2017-11053
severity:	MEDIUM
baseScore:	6.8
vectorString:	AV:N/AC:M/AU:N/C:P/I:P/A:P
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	8.6
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2017-2193
baseSeverity:	HIGH
baseScore:	7.8
vectorString:	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	REQUIRED
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	1.8
impactScore:	5.9
version:	3.0
Trust: 1.0
IPA:	JVNDB-2017-000108
baseSeverity:	HIGH
baseScore:	7.8
vectorString:	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	REQUIRED
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: CNVD: CNVD-2017-11053 // JVNDB: JVNDB-2017-000108 // CNNVD: CNNVD-201706-146 // NVD: CVE-2017-2193

PROBLEMTYPE DATA

problemtype:	CWE-426	Trust: 1.0
problemtype:	CWE-Other	Trust: 0.8

sources: JVNDB: JVNDB-2017-000108 // NVD: CVE-2017-2193

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-201706-146

TYPE

lack of information

Trust: 0.6

sources: CNNVD: CNNVD-201706-146

CONFIGURATIONS

sources: JVNDB: JVNDB-2017-000108

PATCH

title:	TeraTerm Project website	url:	https://ttssh2.osdn.jp/SA/JVN06770361.html.en	Trust: 0.8
title:	TeraTerm installer patch for untrusted search path vulnerability	url:	https://www.cnvd.org.cn/patchInfo/show/96266	Trust: 0.6
title:	Tera Term Fixes for installer security vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=70779	Trust: 0.6

sources: CNVD: CNVD-2017-11053 // JVNDB: JVNDB-2017-000108 // CNNVD: CNNVD-201706-146

EXTERNAL IDS

db:	JVN	id:	JVN06770361	Trust: 3.3
db:	NVD	id:	CVE-2017-2193	Trust: 3.3
db:	BID	id:	98807	Trust: 2.5
db:	JVNDB	id:	JVNDB-2017-000108	Trust: 0.8
db:	CNVD	id:	CNVD-2017-11053	Trust: 0.6
db:	CNNVD	id:	CNNVD-201706-146	Trust: 0.6

sources: CNVD: CNVD-2017-11053 // BID: 98807 // JVNDB: JVNDB-2017-000108 // CNNVD: CNNVD-201706-146 // NVD: CVE-2017-2193

REFERENCES

url:	http://jvn.jp/en/jp/jvn06770361/index.html	Trust: 2.7
url:	https://ttssh2.osdn.jp/sa/jvn06770361.html.en	Trust: 1.9
url:	http://www.securityfocus.com/bid/98807	Trust: 1.6
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-2193	Trust: 0.8
url:	https://jvn.jp/en/ta/jvnta91240916/index.html	Trust: 0.8
url:	https://nvd.nist.gov/vuln/detail/cve-2017-2193	Trust: 0.8
url:	http://jvn.jp/en/jp/jvn06770361/	Trust: 0.6
url:	http://blog.metasploit.com/2010/08/exploiting-dll-hijacking-flaws.html	Trust: 0.3
url:	http://blogs.technet.com/b/srd/archive/2010/08/23/more-information-about-dll-preloading-remote-attack-vector.aspx	Trust: 0.3
url:	https://ttssh2.osdn.jp/	Trust: 0.3

sources: CNVD: CNVD-2017-11053 // BID: 98807 // JVNDB: JVNDB-2017-000108 // CNNVD: CNNVD-201706-146 // NVD: CVE-2017-2193

CREDITS

Eili Masami of Tachibana Lab.

Trust: 0.9

sources: BID: 98807 // CNNVD: CNNVD-201706-146

SOURCES

db:	CNVD	id:	CNVD-2017-11053
db:	BID	id:	98807
db:	JVNDB	id:	JVNDB-2017-000108
db:	CNNVD	id:	CNNVD-201706-146
db:	NVD	id:	CVE-2017-2193

LAST UPDATE DATE

2024-11-23T21:40:58.381000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2017-11053	date:	2017-06-23T00:00:00
db:	BID	id:	98807	date:	2017-06-01T00:00:00
db:	JVNDB	id:	JVNDB-2017-000108	date:	2018-01-24T00:00:00
db:	CNNVD	id:	CNNVD-201706-146	date:	2017-06-12T00:00:00
db:	NVD	id:	CVE-2017-2193	date:	2024-11-21T03:23:04.277

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2017-11053	date:	2017-06-23T00:00:00
db:	BID	id:	98807	date:	2017-06-01T00:00:00
db:	JVNDB	id:	JVNDB-2017-000108	date:	2017-06-01T00:00:00
db:	CNNVD	id:	CNNVD-201706-146	date:	2017-06-07T00:00:00
db:	NVD	id:	CVE-2017-2193	date:	2017-06-09T16:29:01.767