CVE-2019-15694

tigervnc: Heap buffer overflow in DecodeManager::decodeRect

Severity Score

7.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which could be triggered from DecodeManager::decodeRect. Vulnerability occurs due to the signdness error in processing MemOutStream. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

TigerVNC versiones anteriores a 1.10.1, es vulnerable al desbordamiento de búfer de la pila, que podría ser activada desde la función DecodeManager::decodeRect. La vulnerabilidad se presenta debido a un error de firma en el procesamiento de MemOutStream. La explotación de esta vulnerabilidad podría resultar potencialmente en una ejecución de código remota. Este ataque parece ser explotable a través de la conectividad de red.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-08-27 CVE Reserved
2019-12-26 CVE Published
2023-08-09 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-122: Heap-based Buffer Overflow
CWE-787: Out-of-bounds Write

CAPEC

References (6)

URL	Tag	Source
https://github.com/TigerVNC/tigervnc/releases/tag/v1.10.1	Release Notes

URL	Date	SRC
https://github.com/CendioOssman/tigervnc/commit/0943c006c7d900dfc0281639e992791d6c567438	2024-08-05
https://www.openwall.com/lists/oss-security/2019/12/20/2	2024-08-05

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00039.html	2020-10-16
https://access.redhat.com/security/cve/CVE-2019-15694	2020-09-29
https://bugzilla.redhat.com/show_bug.cgi?id=1790315	2020-09-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Tigervnc Search vendor "Tigervnc"		Tigervnc Search vendor "Tigervnc" for product "Tigervnc"				< 1.10.1 Search vendor "Tigervnc" for product "Tigervnc" and version " < 1.10.1"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.1 Search vendor "Opensuse" for product "Leap" and version "15.1"		-		Affected