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CVE-2018-20749

Good to know:

Date: January 30, 2019

LibVNC before 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.

Language: C

Severity Score

9.8

Related Resources (15)

Url: https://nvd.nist.gov/vuln/detail/CVE-2018-20749

Url: https://usn.ubuntu.com/3877-1/

Url: https://access.redhat.com/security/cve/CVE-2018-20749

Url: https://github.com/LibVNC/libvncserver/commit/15bb719c03cc70f14c36a843dcb16ed69b405707

Url: https://usn.ubuntu.com/4547-1/

Url: https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html

Url: https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf

Url: https://security-tracker.debian.org/tracker/CVE-2018-20749

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2018-20749

Url: https://usn.ubuntu.com/4587-1/

Url: http://www.securityfocus.com/bid/106825

Url: https://www.openwall.com/lists/oss-security/2018/12/10/8

Url: https://github.com/LibVNC/libvncserver/issues/273

Url: https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html

Url: https://www.mend.io/vulnerability-database/CVE-2018-20749

Severity Score

9.8

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Top Fix

Upgrade Version

Upgrade to version ibVNCServer-0.9.12

CVSS v3.1

Base Score:	9.8
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:	7.5
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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