CVE-2018-20022 (GCVE-0-2018-20022)

Vulnerability from cvelistv5 – Published: 2018-12-19 16:00 – Updated: 2024-08-05 11:51
VLAI?
Summary
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
Severity ?
No CVSS data available.
CWE
  • Information disclosure
Assigner
References
https://www.debian.org/security/2019/dsa-4383 vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2018… mailing-listx_refsource_MLIST
https://ics-cert.kaspersky.com/advisories/klcert-… x_refsource_MISC
https://usn.ubuntu.com/3877-1/ vendor-advisoryx_refsource_UBUNTU
https://security.gentoo.org/glsa/201908-05 vendor-advisoryx_refsource_GENTOO
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://security.gentoo.org/glsa/202006-06 vendor-advisoryx_refsource_GENTOO
https://usn.ubuntu.com/4547-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4547-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4587-1/ vendor-advisoryx_refsource_UBUNTU
Impacted products
Vendor Product Version
n/a LibVNC Affected: commit 2f5b2ad1c6c99b1ac6482c95844a84d66bb52838
Show details on NVD website
To clipboard 

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ASLR.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:N/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-665\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"0.9.12\",\"matchCriteriaId\":\"DEF1BF44-78B8-44E3-9A5A-29AB8111322B\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"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\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"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\"}]}]}],\"references\":[{\"url\":\"https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-032-libvnc-multiple-memory-leaks/\",\"source\":\"vulnerability@kaspersky.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html\",\"source\":\"vulnerability@kaspersky.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"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\"},{\"url\":\"https://usn.ubuntu.com/3877-1/\",\"source\":\"vulnerability@kaspersky.com\",\"tags\":[\"Third Party Advisory\"]},{\"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\"},{\"url\":\"https://www.debian.org/security/2019/dsa-4383\",\"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\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"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\"},{\"url\":\"https://usn.ubuntu.com/3877-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"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\"},{\"url\":\"https://www.debian.org/security/2019/dsa-4383\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.