Base Score

CRITICAL9.8

CVE-2018-20749

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.

VectorNETWORK

Published Bycve@mitre.org

Published DateJan 30, 2019, 18:29

Weakness Type (CWE):CWE-787

CVSS Metrics

Base Score

9.8

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base Severity

CRITICAL

Version

3.1

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

References

http://www.securityfocus.com/bid/106825
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
https://github.com/LibVNC/libvncserver/commit/15bb719c03cc70f14c36a843dcb16ed69b405707
https://github.com/LibVNC/libvncserver/issues/273
https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
https://usn.ubuntu.com/3877-1/
https://usn.ubuntu.com/4547-1/
https://usn.ubuntu.com/4587-1/
https://www.openwall.com/lists/oss-security/2018/12/10/8

Base Score

CRITICAL9.8

Weakness Type (CWE):CWE-787

CVSS Metrics

Base Score

9.8

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base Severity

CRITICAL

Version

3.1

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