CVE-2018-20022

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{"affected": [{"affectedData": [{"product": "LibVNC", "vendor": "n/a", "versions": [{"status": "affected", "version": "commit 2f5b2ad1c6c99b1ac6482c95844a84d66bb52838"}]}], "source": "vulnerability@kaspersky.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:*", "matchCriteriaId": "DEF1BF44-78B8-44E3-9A5A-29AB8111322B", "versionEndExcluding": "0.9.12", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*", "matchCriteriaId": "B5A6F2F3-4894-4392-8296-3B8DD2679084", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*", "matchCriteriaId": "07C312A0-CD2C-4B9C-B064-6409B25C278F", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "LibVNC before 2f5b2ad1c6c99b1ac6482c95844a84d66bb52838 contains multiple weaknesses CWE-665: Improper Initialization vulnerability in VNC client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR"}, {"lang": "es", "value": "LibVNC en versiones anteriores a la 2f5b2ad1c6c99b1ac6482c95844a84d66bb52838 contiene m\u00faltiples debilidades CWE-665: inicializaci\u00f3n incorrecta en el c\u00f3digo del cliente VNC que permite que el atacante lea memoria de la pila y puede abusarse para divulgar informaci\u00f3n. Si se combina con otra vulnerabilidad, puede emplearse para filtrar la distribuci\u00f3n de la memoria de la pila y omitir ASLR."}], "id": "CVE-2018-20022", "lastModified": "2026-06-17T01:52:11.230", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2018-12-19T16:29:00.467", "references": [{"source": "vulnerability@kaspersky.com", "tags": ["Third Party Advisory"], "url": "https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-032-libvnc-multiple-memory-leaks/"}, {"source": "vulnerability@kaspersky.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html"}, {"source": "vulnerability@kaspersky.com", "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html"}, {"source": "vulnerability@kaspersky.com", "url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00033.html"}, {"source": "vulnerability@kaspersky.com", "url": "https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html"}, {"source": "vulnerability@kaspersky.com", "url": "https://security.gentoo.org/glsa/201908-05"}, {"source": "vulnerability@kaspersky.com", "url": "https://security.gentoo.org/glsa/202006-06"}, {"source": "vulnerability@kaspersky.com", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/3877-1/"}, {"source": "vulnerability@kaspersky.com", "url": "https://usn.ubuntu.com/4547-1/"}, {"source": "vulnerability@kaspersky.com", "url": "https://usn.ubuntu.com/4547-2/"}, {"source": "vulnerability@kaspersky.com", "url": "https://usn.ubuntu.com/4587-1/"}, {"source": "vulnerability@kaspersky.com", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2019/dsa-4383"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-032-libvnc-multiple-memory-leaks/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00033.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/201908-05"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/202006-06"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/3877-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/4547-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/4547-2/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/4587-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2019/dsa-4383"}], "sourceIdentifier": "vulnerability@kaspersky.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-665"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "libvncserver: Improper initialization in VNC client code allows for information disclosure", "id": "1661123", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1661123"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.4", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L", "status": "draft"}, "cwe": "CWE-665", "details": ["LibVNC before 2f5b2ad1c6c99b1ac6482c95844a84d66bb52838 contains multiple weaknesses CWE-665: Improper Initialization vulnerability in VNC client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR"], "name": "CVE-2018-20022", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "libvncserver", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "libvncserver", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "libvncserver", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2018-12-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-20022\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-20022\nhttps://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-032-libvnc-multiple-memory-leaks/"], "threat_severity": "Low"}

{}