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CVE-2020-14400

Medium priority

Some fixes available 3 of 18

An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint16_t pointers in libvncserver/translate.c. NOTE: Third parties do not consider this to be a vulnerability as there is no known path...

3 affected packages

veyon, x11vnc, libvncserver

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
veyon Not affected Not affected Not affected Not in release
x11vnc Not affected Not affected Not affected Not affected
libvncserver Not affected Not affected Fixed Fixed
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CVE-2020-14399

Medium priority

Some fixes available 3 of 18

An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c. NOTE: there is reportedly "no trust boundary crossed.

3 affected packages

libvncserver, veyon, x11vnc

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libvncserver Not affected Not affected Fixed Fixed
veyon Not affected Not affected Not affected Not in release
x11vnc Not affected Not affected Not affected Not affected
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CVE-2020-14398

Medium priority

Some fixes available 3 of 25

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

3 affected packages

libvncserver, x11vnc, veyon

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libvncserver Not affected Not affected Fixed Fixed
x11vnc Not affected Not affected Not affected Not affected
veyon Needs evaluation Needs evaluation Needs evaluation Not in release
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CVE-2020-14397

Medium priority

Some fixes available 17 of 39

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

4 affected packages

veyon, libvncserver, x11vnc, vino

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
veyon Needs evaluation Needs evaluation Needs evaluation Not in release
libvncserver Not affected Not affected Fixed Fixed
x11vnc Not affected Not affected Not affected Not affected
vino Fixed Fixed Fixed Fixed
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CVE-2020-14396

Medium priority

Some fixes available 1 of 22

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

3 affected packages

libvncserver, veyon, x11vnc

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libvncserver Not affected Not affected Fixed Not affected
veyon Needs evaluation Needs evaluation Needs evaluation Not in release
x11vnc Not affected Not affected Not affected Not affected
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CVE-2019-20840

Medium priority

Some fixes available 2 of 24

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.

3 affected packages

libvncserver, veyon, x11vnc

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libvncserver Not affected Not affected Not affected Fixed
veyon Needs evaluation Needs evaluation Needs evaluation Not in release
x11vnc Not affected Not affected Not affected Not affected
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CVE-2019-20839

Medium priority

Some fixes available 3 of 25

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

3 affected packages

libvncserver, veyon, x11vnc

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libvncserver Not affected Not affected Fixed Fixed
veyon Needs evaluation Needs evaluation Needs evaluation Not in release
x11vnc Not affected Not affected Not affected Not affected
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CVE-2018-21247

Low priority
Needs evaluation

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.

4 affected packages

vino, veyon, x11vnc, libvncserver

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
vino Not affected Not affected Not affected Not affected
veyon Needs evaluation Needs evaluation Needs evaluation Not in release
x11vnc Not affected Not affected Needs evaluation Needs evaluation
libvncserver Not affected Not affected Needs evaluation Needs evaluation
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CVE-2019-20788

Medium priority

Some fixes available 3 of 11

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.

2 affected packages

libvncserver, x11vnc

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libvncserver Not affected Not affected Not affected Fixed
x11vnc Not affected Not affected Not affected Not affected
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CVE-2019-15690

Medium priority

Some fixes available 4 of 12

LibVNCServer 0.9.12 release and earlier contains heap buffer overflow vulnerability within the HandleCursorShape() function in libvncclient/cursor.c. An attacker sends cursor shapes with specially crafted dimensions, which can...

2 affected packages

libvncserver, x11vnc

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libvncserver Not affected Not affected Fixed Fixed
x11vnc Not affected Not affected Not affected Not affected
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