CVE-2017-6542

The ssh_agent_channel_data function in PuTTY before 0.68 allows remote attackers to have unspecified impact via a large length value in an agent protocol message and leveraging the ability to connect to the Unix-domain socket representing the forwarded agent connection, which trigger a buffer overflow.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

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CVSS v3.0 : CRITICAL

V3 Legend

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

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

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CVSS v2.0 : HIGH

V2 Legend

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://security.gentoo.org/glsa/201703-03	Third Party Advisory VDB Entry
https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=4ff22863d895cb7ebfced4cf923a012a614adaa8	Patch Third Party Advisory
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html	Patch Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2017-03/msg00055.html	Third Party Advisory
http://www.securityfocus.com/bid/97156	Third Party Advisory VDB Entry
https://security.gentoo.org/glsa/201706-09
http://www.securitytracker.com/id/1038067
https://www.exploit-db.com/exploits/42137/

Configurations

Configuration 1 (hide)

cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:opensuse_project:leap:42.1:::::::*
	cpe:2.3:o:opensuse:leap:42.2:::::::*

Information

Published : 2017-03-27 10:59

Updated : 2018-10-30 09:27

NVD link : CVE-2017-6542

Mitre link : CVE-2017-6542

JSON object : View

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

Products Affected

opensuse

leap

opensuse_project

leap

putty

putty

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://security.gentoo.org/glsa/201703-03", "name": "GLSA-201703-03", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "GENTOO"}, {"url": "https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=4ff22863d895cb7ebfced4cf923a012a614adaa8", "name": "https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=4ff22863d895cb7ebfced4cf923a012a614adaa8", "tags": ["Patch", "Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html", "name": "http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html", "tags": ["Patch", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "http://lists.opensuse.org/opensuse-updates/2017-03/msg00055.html", "name": "openSUSE-SU-2017:0741", "tags": ["Third Party Advisory"], "refsource": "SUSE"}, {"url": "http://www.securityfocus.com/bid/97156", "name": "97156", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "BID"}, {"url": "https://security.gentoo.org/glsa/201706-09", "name": "GLSA-201706-09", "tags": [], "refsource": "GENTOO"}, {"url": "http://www.securitytracker.com/id/1038067", "name": "1038067", "tags": [], "refsource": "SECTRACK"}, {"url": "https://www.exploit-db.com/exploits/42137/", "name": "42137", "tags": [], "refsource": "EXPLOIT-DB"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "The ssh_agent_channel_data function in PuTTY before 0.68 allows remote attackers to have unspecified impact via a large length value in an agent protocol message and leveraging the ability to connect to the Unix-domain socket representing the forwarded agent connection, which trigger a buffer overflow."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-119"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2017-6542", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "HIGH", "acInsufInfo": true, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}}, "publishedDate": "2017-03-27T17:59Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "0.67"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:opensuse_project:leap:42.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2018-10-30T16:27Z"}

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