Christian Beier

8 exploits Active since Jan 2019
CVE-2018-20748 WRITEUP CRITICAL WRITEUP
Libvncserver < 0.9.12 - Out-of-Bounds Write
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.
CVSS 9.8
CVE-2018-20749 WRITEUP CRITICAL WRITEUP
Libvncserver < 0.9.12 - Out-of-Bounds Write
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.
CVSS 9.8
CVE-2019-15681 WRITEUP HIGH WRITEUP
Libvncserver < 0.9.12 - Information Disclosure
LibVNC commit before d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a contains a memory leak (CWE-655) in VNC server 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 commit d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a.
CVSS 7.5
CVE-2019-20788 WRITEUP CRITICAL WRITEUP
Canonical Ubuntu Linux < 0.9.12 - Integer Overflow
libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may overlap CVE-2019-15690.
CVSS 9.8
CVE-2019-20839 WRITEUP HIGH WRITEUP
Libvncserver < 0.9.12 - Buffer Overflow
libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename.
CVSS 7.5
CVE-2020-14396 WRITEUP HIGH WRITEUP
Libvncserver < 0.9.12 - NULL Pointer Dereference
An issue was discovered in LibVNCServer before 0.9.13. libvncclient/tls_openssl.c has a NULL pointer dereference.
CVSS 7.5
CVE-2020-14405 WRITEUP MEDIUM WRITEUP
Libvncserver < 0.9.12 - Resource Allocation Without Limits
An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.
CVSS 6.5
CVE-2020-29260 WRITEUP HIGH WRITEUP
libvncclient <0.9.13 - Memory Corruption
libvncclient v0.9.13 was discovered to contain a memory leak via the function rfbClientCleanup().
CVSS 7.5