CVE-2011-1775

The CSecurityTLS::processMsg function in common/rfb/CSecurityTLS.cxx in the vncviewer component in TigerVNC 1.1beta1 does not properly verify the server's X.509 certificate, which allows man-in-the-middle attackers to spoof a TLS VNC server via an arbitrary certificate.

CVSS v2.0 5.8 MEDIUM

5.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 4.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
http://www.mail-archive.com/tigervnc-devel@lists.sourceforge.net/msg01342.html
https://bugzilla.redhat.com/show_bug.cgi?id=702470
https://bugzilla.redhat.com/show_bug.cgi?id=702672
http://openwall.com/lists/oss-security/2011/05/09/7
http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060567.html
http://openwall.com/lists/oss-security/2011/05/06/2
http://www.mail-archive.com/tigervnc-devel@lists.sourceforge.net/msg01347.html	Patch
http://www.securityfocus.com/bid/47738
http://www.mail-archive.com/tigervnc-devel@lists.sourceforge.net/msg01345.html	Patch
http://secunia.com/advisories/44939
http://www.redhat.com/support/errata/RHSA-2011-0871.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:tigervnc:tigervnc:1.1:beta1:*:*:*:*:*:*

Information

Published : 2011-05-26 18:55

Updated : 2011-09-07 03:16

NVD link : CVE-2011-1775

Mitre link : CVE-2011-1775

JSON object : View

Products Affected

tigervnc

tigervnc

CWE

CWE-20

Improper Input Validation

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "http://www.mail-archive.com/tigervnc-devel@lists.sourceforge.net/msg01342.html", "name": "[tigervnc-devel] 20110504 potential vulnerability in TLS secType?", "tags": [], "refsource": "MLIST"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=702470", "name": "https://bugzilla.redhat.com/show_bug.cgi?id=702470", "tags": [], "refsource": "CONFIRM"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=702672", "name": "https://bugzilla.redhat.com/show_bug.cgi?id=702672", "tags": [], "refsource": "CONFIRM"}, {"url": "http://openwall.com/lists/oss-security/2011/05/09/7", "name": "[oss-security] 20110509 Re: CVE request: tigervnc", "tags": [], "refsource": "MLIST"}, {"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060567.html", "name": "FEDORA-2011-6838", "tags": [], "refsource": "FEDORA"}, {"url": "http://openwall.com/lists/oss-security/2011/05/06/2", "name": "[oss-security] 20110506 CVE request: tigervnc", "tags": [], "refsource": "MLIST"}, {"url": "http://www.mail-archive.com/tigervnc-devel@lists.sourceforge.net/msg01347.html", "name": "[tigervnc-devel] 20110505 Re: potential vulnerability in TLS secType?", "tags": ["Patch"], "refsource": "MLIST"}, {"url": "http://www.securityfocus.com/bid/47738", "name": "47738", "tags": [], "refsource": "BID"}, {"url": "http://www.mail-archive.com/tigervnc-devel@lists.sourceforge.net/msg01345.html", "name": "[tigervnc-devel] 20110504 Re: potential vulnerability in TLS secType?", "tags": ["Patch"], "refsource": "MLIST"}, {"url": "http://secunia.com/advisories/44939", "name": "44939", "tags": [], "refsource": "SECUNIA"}, {"url": "http://www.redhat.com/support/errata/RHSA-2011-0871.html", "name": "RHSA-2011:0871", "tags": [], "refsource": "REDHAT"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "The CSecurityTLS::processMsg function in common/rfb/CSecurityTLS.cxx in the vncviewer component in TigerVNC 1.1beta1 does not properly verify the server's X.509 certificate, which allows man-in-the-middle attackers to spoof a TLS VNC server via an arbitrary certificate."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-20"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2011-1775", "ASSIGNER": "secalert@redhat.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "impactScore": 4.9, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}}, "publishedDate": "2011-05-26T18:55Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:tigervnc:tigervnc:1.1:beta1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2011-09-07T03:16Z"}