MidnightBSD

Advisories for libvnc_project

CVE-2018-15126 HIGH

LibVNC before commit 73cb96fec028a576a5a24417b57723b55854ad7b contains heap use-after-free vulnerability in server code of file transfer extension that can result remote code execution

CVSS 2.0

Severity: HIGH

Problem Type: CWE-416,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.10
libvnc_project libvncserver *
debian debian_linux 8.0
debian debian_linux 9.0
canonical ubuntu_linux 18.04
CVE-2018-15127 HIGH

LibVNC before commit 502821828ed00b4a2c4bef90683d0fd88ce495de contains heap out-of-bound write vulnerability in server code of file transfer extension that can result remote code execution

CVSS 2.0

Severity: HIGH

Problem Type: CWE-787,

Products Affected

Vendor Product Version
redhat enterprise_linux_server_aus 7.6
canonical ubuntu_linux 14.04
redhat enterprise_linux_server 7.0
canonical ubuntu_linux 18.10
debian debian_linux 9.0
canonical ubuntu_linux 18.04
redhat enterprise_linux_server_eus 7.6
redhat enterprise_linux_server_tus 7.6
canonical ubuntu_linux 16.04
redhat enterprise_linux_workstation 7.0
libvnc_project libvncserver *
debian debian_linux 8.0
redhat enterprise_linux_desktop 7.0
CVE-2018-20019 HIGH

LibVNC before commit a83439b9fbe0f03c48eb94ed05729cb016f8b72f contains multiple heap out-of-bound write vulnerabilities in VNC client code that can result remote code execution

CVSS 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 3.9 5.9

CVSS 2.0

Severity: HIGH

Problem Type: CWE-787,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2018-20020 HIGH

LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d contains heap out-of-bound write vulnerability inside structure in VNC client code that can result remote code execution

CVSS 2.0

Severity: HIGH

Problem Type: CWE-787,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.10
libvnc_project libvncserver *
debian debian_linux 8.0
debian debian_linux 9.0
canonical ubuntu_linux 18.04
CVE-2018-20021 HIGH

LibVNC before commit c3115350eb8bb635d0fdb4dbbb0d0541f38ed19c contains a CWE-835: Infinite loop vulnerability in VNC client code. Vulnerability allows attacker to consume excessive amount of resources like CPU and RAM

CVSS 2.0

Severity: HIGH

Problem Type: CWE-835,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.10
libvnc_project libvncserver *
debian debian_linux 8.0
debian debian_linux 9.0
canonical ubuntu_linux 18.04
CVE-2018-20022 MEDIUM

LibVNC before 2f5b2ad1c6c99b1ac6482c95844a84d66bb52838 contains multiple weaknesses CWE-665: Improper Initialization vulnerability in VNC client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-665,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.10
libvnc_project libvncserver *
debian debian_linux 8.0
debian debian_linux 9.0
canonical ubuntu_linux 18.04
CVE-2018-20023 MEDIUM

LibVNC before 8b06f835e259652b0ff026898014fc7297ade858 contains CWE-665: Improper Initialization vulnerability in VNC Repeater client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-665,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.10
libvnc_project libvncserver *
debian debian_linux 8.0
debian debian_linux 9.0
canonical ubuntu_linux 18.04
CVE-2018-20024 MEDIUM

LibVNC before commit 4a21bbd097ef7c44bb000c3bd0907f96a10e4ce7 contains null pointer dereference in VNC client code that can result DoS.

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-476,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.10
libvnc_project libvncserver *
debian debian_linux 8.0
debian debian_linux 9.0
canonical ubuntu_linux 18.04
CVE-2018-20748 HIGH

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 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 3.9 5.9

CVSS 2.0

Severity: HIGH

Problem Type: CWE-787,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2018-20749 HIGH

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 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 3.9 5.9

CVSS 2.0

Severity: HIGH

Problem Type: CWE-787,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2018-20750 HIGH

LibVNC through 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.

CVSS 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 3.9 5.9

CVSS 2.0

Severity: HIGH

Problem Type: CWE-787,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2018-21247 MEDIUM

An issue was discovered in LibVNCServer before 0.9.13. There is an information leak (of uninitialized memory contents) in the libvncclient/rfbproto.c ConnectToRFBRepeater function.

CVSS 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 3.9 3.6

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-909,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
opensuse leap 15.2
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2018-6307 MEDIUM

LibVNC before commit ca2a5ac02fbbadd0a21fabba779c1ea69173d10b contains heap use-after-free vulnerability in server code of file transfer extension that can result remote code execution.

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-416,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.10
libvnc_project libvncserver *
debian debian_linux 8.0
debian debian_linux 9.0
canonical ubuntu_linux 18.04
CVE-2019-15681 MEDIUM

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 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 3.9 3.6

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-665,CWE-665,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2019-20788 HIGH

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 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 3.9 5.9

CVSS 2.0

Severity: HIGH

Problem Type: CWE-190,CWE-787,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2019-20839 MEDIUM

libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename.

CVSS 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 3.9 3.6

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-120,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
opensuse leap 15.2
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
canonical ubuntu_linux 20.04
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2019-20840 MEDIUM

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/ws_decode.c can lead to a crash because of unaligned accesses in hybiReadAndDecode.

CVSS 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 3.9 3.6

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-787,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
opensuse leap 15.2
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
canonical ubuntu_linux 20.04
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2020-14396 MEDIUM

An issue was discovered in LibVNCServer before 0.9.13. libvncclient/tls_openssl.c has a NULL pointer dereference.

CVSS 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 3.9 3.6

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-476,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
canonical ubuntu_linux 20.04
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2020-14397 MEDIUM

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rfbregion.c has a NULL pointer dereference.

CVSS 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 3.9 3.6

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-476,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
opensuse leap 15.2
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
canonical ubuntu_linux 20.04
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2020-14398 MEDIUM

An issue was discovered in LibVNCServer before 0.9.13. An improperly closed TCP connection causes an infinite loop in libvncclient/sockets.c.

CVSS 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 3.9 3.6

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-835,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
opensuse leap 15.2
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
canonical ubuntu_linux 20.04
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2020-14402 MEDIUM

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/corre.c allows out-of-bounds access via encodings.

CVSS 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 5.4 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L 2.8 2.5

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-787,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
canonical ubuntu_linux 20.04
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2020-14403 MEDIUM

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/hextile.c allows out-of-bounds access via encodings.

CVSS 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 5.4 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L 2.8 2.5

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-787,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
canonical ubuntu_linux 20.04
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2020-14404 MEDIUM

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rre.c allows out-of-bounds access via encodings.

CVSS 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 5.4 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L 2.8 2.5

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-787,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
canonical ubuntu_linux 20.04
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *
CVE-2020-14405 MEDIUM

An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.

CVSS 3.x

Source Score Severity Vector Exploitability Impact
nvd@nist.gov 6.5 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H 2.8 3.6

CVSS 2.0

Severity: MEDIUM

Problem Type: CWE-770,

Products Affected

Vendor Product Version
canonical ubuntu_linux 14.04
siemens simatic_itc1500_pro_firmware *
siemens simatic_itc2200_pro_firmware *
canonical ubuntu_linux 18.10
debian debian_linux 9.0
siemens simatic_itc1500_firmware *
canonical ubuntu_linux 18.04
siemens simatic_itc1900_pro_firmware *
canonical ubuntu_linux 16.04
libvnc_project libvncserver *
debian debian_linux 8.0
siemens simatic_itc1900_firmware *
siemens simatic_itc2200_firmware *