High severity · published Dec 26, 2019
CVE-2019-15694
TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which could be triggered from DecodeManager::decodeRect
7.2
CVSS
4.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.5% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LE
Leap · Opensuse
15.1 · source: NVD
TI
Tigervnc · Tigervnc
before 1.10.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-15694
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-15694
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00039.html
Exploit
https://github.com/CendioOssman/tigervnc/commit/0943c006c7d900dfc0281639e992791d6c567438
Release Notes
https://github.com/TigerVNC/tigervnc/releases/tag/v1.10.1
Exploit
https://www.openwall.com/lists/oss-security/2019/12/20/2
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