CVE-2018-20177

rdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to a Heap-Based Buffer Overflow in the function rdp_in_unistr() and results in memory corruption and possibly even a remote code execution.

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

9.8^/10

CVSS v3.0 : CRITICAL

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

7.5^/10

CVSS v2.0 : HIGH

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://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/	Exploit Third Party Advisory
https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1	Patch Third Party Advisory
https://www.debian.org/security/2019/dsa-4394
https://security.gentoo.org/glsa/201903-06
https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html
http://www.securityfocus.com/bid/106938
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:rdesktop:rdesktop:*:*:*:*:*:*:*:*

Information

Published : 2019-03-15 18:29

Updated : 2020-08-24 17:37

NVD link : CVE-2018-20177

Mitre link : CVE-2018-20177

JSON object : View

Products Affected

rdesktop

rdesktop

CWE

CWE-190

Integer Overflow or Wraparound

CWE-787

Out-of-bounds Write

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/", "name": "https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/", "tags": ["Exploit", "Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1", "name": "https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.debian.org/security/2019/dsa-4394", "name": "DSA-4394", "tags": [], "refsource": "DEBIAN"}, {"url": "https://security.gentoo.org/glsa/201903-06", "name": "GLSA-201903-06", "tags": [], "refsource": "GENTOO"}, {"url": "https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html", "name": "[debian-lts-announce] 20190219 [SECURITY] [DLA 1683-1] rdesktop security update", "tags": [], "refsource": "MLIST"}, {"url": "http://www.securityfocus.com/bid/106938", "name": "106938", "tags": [], "refsource": "BID"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html", "name": "openSUSE-SU-2019:2135", "tags": [], "refsource": "SUSE"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "rdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to a Heap-Based Buffer Overflow in the function rdp_in_unistr() and results in memory corruption and possibly even a remote code execution."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-787"}, {"lang": "en", "value": "CWE-190"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2018-20177", "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": false, "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": "2019-03-15T18:29Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:rdesktop:rdesktop:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "1.8.3"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2020-08-24T17:37Z"}