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CVE-2016-9942

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Date: December 31, 2016

Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message with the Ultra type tile, such that the LZO payload decompressed length exceeds what is specified by the tile dimensions.

Language: C

Severity Score

Related Resources (10)

https://nvd.nist.gov/vuln/detail/CVE-2016-9942
http://www.securityfocus.com/bid/95170
http://www.debian.org/security/2017/dsa-3753
https://security.gentoo.org/glsa/201702-24
https://usn.ubuntu.com/4587-1/
https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11
https://access.redhat.com/security/cve/CVE-2016-9942
https://github.com/LibVNC/libvncserver/pull/137
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
https://www.mend.io/vulnerability-database/CVE-2016-9942

Severity Score

Weakness Type (CWE)

Buffer Errors

CWE-119

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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