CVE-2018-20748
LibVNC Heap Out-of-Bounds Write Vulnerability
Description
LibVNC before 0.9.12 contains multiple heap out-of-bounds write vulnerabilities in libvncclient/rfbproto.c. The fix for CVE-2018-20019 was incomplete.
INFO
Published Date :
Jan. 30, 2019, 6:29 p.m.
Last Modified :
March 9, 2022, 9:54 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2018-20748
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-20748.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-20748 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-20748 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Mar. 09, 2022
Action Type Old Value New Value Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf Patch, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html No Types Assigned https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html Mailing List, Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4547-1/ No Types Assigned https://usn.ubuntu.com/4547-1/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4587-1/ No Types Assigned https://usn.ubuntu.com/4587-1/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_itc1500_firmware:*:*:*:*:*:*:*:* versions from (including) 3.0.0.0 up to (excluding) 3.2.1.0 OR cpe:2.3:h:siemens:simatic_itc1500:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_itc1500_pro_firmware:*:*:*:*:*:*:*:* versions from (including) 3.0.0.0 up to (excluding) 3.2.1.0 OR cpe:2.3:h:siemens:simatic_itc1500_pro:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_itc1900_firmware:*:*:*:*:*:*:*:* versions from (including) 3.0.0.0 up to (excluding) 3.2.1.0 OR cpe:2.3:h:siemens:simatic_itc1900:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_itc1900_pro_firmware:*:*:*:*:*:*:*:* versions from (including) 3.0.0.0 up to (excluding) 3.2.1.0 OR cpe:2.3:h:siemens:simatic_itc1900_pro:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_itc2200_firmware:*:*:*:*:*:*:*:* versions from (including) 3.0.0.0 up to (excluding) 3.2.1.0 OR cpe:2.3:h:siemens:simatic_itc2200:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_itc2200_pro_firmware:*:*:*:*:*:*:*:* versions from (including) 3.0.0.0 up to (excluding) 3.2.1.0 OR cpe:2.3:h:siemens:simatic_itc2200_pro:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 14, 2021
Action Type Old Value New Value Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf [No Types Assigned] -
CVE Modified by [email protected]
Oct. 23, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4587-1/ [No Types Assigned] -
CVE Modified by [email protected]
Sep. 30, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4547-1/ [No Types Assigned] -
CVE Modified by [email protected]
Oct. 31, 2019
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 05, 2019
Action Type Old Value New Value Changed Reference Type https://usn.ubuntu.com/3877-1/ No Types Assigned https://usn.ubuntu.com/3877-1/ Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html No Types Assigned https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 01, 2019
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3877-1/ [No Types Assigned] Added Reference https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html [No Types Assigned] -
Initial Analysis by [email protected]
Jan. 31, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/LibVNC/libvncserver/commit/e34bcbb759ca5bef85809967a268fdf214c1ad2c No Types Assigned https://github.com/LibVNC/libvncserver/commit/e34bcbb759ca5bef85809967a268fdf214c1ad2c Patch, Third Party Advisory Changed Reference Type https://github.com/LibVNC/libvncserver/commit/c5ba3fee85a7ecbbca1df5ffd46d32b92757bc2a No Types Assigned https://github.com/LibVNC/libvncserver/commit/c5ba3fee85a7ecbbca1df5ffd46d32b92757bc2a Patch, Third Party Advisory Changed Reference Type https://github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42bae No Types Assigned https://github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42bae Patch, Third Party Advisory Changed Reference Type https://www.openwall.com/lists/oss-security/2018/12/10/8 No Types Assigned https://www.openwall.com/lists/oss-security/2018/12/10/8 Exploit, Mailing List, Third Party Advisory Changed Reference Type https://github.com/LibVNC/libvncserver/issues/273 No Types Assigned https://github.com/LibVNC/libvncserver/issues/273 Issue Tracking, Third Party Advisory Changed Reference Type https://github.com/LibVNC/libvncserver/commit/c2c4b81e6cb3b485fb1ec7ba9e7defeb889f6ba7 No Types Assigned https://github.com/LibVNC/libvncserver/commit/c2c4b81e6cb3b485fb1ec7ba9e7defeb889f6ba7 Patch, Third Party Advisory Added CWE CWE-787 Added CPE Configuration OR *cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:* versions up to (excluding) 0.9.12
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-20748 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-20748
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.43 }} -0.06%
score
0.74510
percentile