Advisories

KLCERT-19-009: UltraVNC Access of Memory Location After End of Buffer

01 March 2019

UltraVNC revision 1203 has out-of-bounds access vulnerability in VNC client inside RAW decoder, which can potentially result code execution. This attack appear to be exploitable via network connectivity. This vulnerability has been fixed in revision 1204. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code.
KLCERT-19-008: UltraVNC Heap-based Buffer Overflow

01 March 2019

UltraVNC revision 1203 has multiple heap buffer overflow vulnerabilities in VNC client code inside Ultra decoder, which results code execution. This attack appear to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1204. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code.
KLCERT-19-007: UltraVNC Out-of-bound Read

01 March 2019

UltraVNC revision 1199 has a out-of-bounds read vulnerability in VNC code inside client CoRRE decoder, caused by multiplication overflow. This attack appear to be exploitable via network connectivity. This vulnerability has been fixed in revision 1200. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code.
KLCERT-19-006: UltraVNC Out-of-bound Read

01 March 2019

UltraVNC revision 1199 has a out-of-bounds read vulnerability in VNC client RRE decoder code, caused by multiplication overflow. This attack appear to be exploitable via network connectivity. This vulnerability has been fixed in revision 1200. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code.
KLCERT-19-005: UltraVNC Memory Leak

01 March 2019

UltraVNC revision 1198 contains multiple memory leaks (CWE-655) in VNC client code, which allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appear to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1199. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code.
KLCERT-19-004: UltraVNC Heap-based Buffer Overflow

01 March 2019

UltraVNC revision 1198 has a heap buffer overflow vulnerability in VNC client code which results code execution. This attack appear to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code.
KLCERT-19-003: UltraVNC Buffer Underwrite

01 March 2019

UltraVNC revision 1198 has a buffer underflow vulnerability in VNC client code, which can potentially result code execution. This attack appear to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code.
KLCERT-19-002: AVEA Wonderware System Platform Vulnerability – Unauthorized Access to Credentials

01 March 2019

AVEVA Wonderware System Platform vulnerability leading to Unauthorized Access to Credentials. Vulnerability allows unauthorized access to the credentials for the ArchestrA Network User Account.
KLCERT-19-001: DeltaV Authentication Bypass

01 March 2019

Authentication bypass in DVBBaseMP_NoMFC.dll in DeltaV. A remote attacker can bypass authentication in DeltaV and expand attack surface.
KLCERT-18-037: CodeSYS Control V3 Use of Insufficiently Random Values

19 December 2018

CODESYS communication servers use insufficiently random values.