Vulnerability Details CVE-2018-20748
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.109
EPSS Ranking 93.0%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 7.5
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
- https://github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42bae
- https://github.com/LibVNC/libvncserver/commit/c2c4b81e6cb3b485fb1ec7ba9e7defeb889f6ba7
- https://github.com/LibVNC/libvncserver/commit/c5ba3fee85a7ecbbca1df5ffd46d32b92757bc2a
- https://github.com/LibVNC/libvncserver/commit/e34bcbb759ca5bef85809967a268fdf214c1ad2c
- https://github.com/LibVNC/libvncserver/issues/273
- https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://usn.ubuntu.com/3877-1/
- https://usn.ubuntu.com/4547-1/
- https://usn.ubuntu.com/4587-1/
- https://www.openwall.com/lists/oss-security/2018/12/10/8
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
- https://github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42bae
- https://github.com/LibVNC/libvncserver/commit/c2c4b81e6cb3b485fb1ec7ba9e7defeb889f6ba7
- https://github.com/LibVNC/libvncserver/commit/c5ba3fee85a7ecbbca1df5ffd46d32b92757bc2a
- https://github.com/LibVNC/libvncserver/commit/e34bcbb759ca5bef85809967a268fdf214c1ad2c
- https://github.com/LibVNC/libvncserver/issues/273
- https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://usn.ubuntu.com/3877-1/
- https://usn.ubuntu.com/4547-1/
- https://usn.ubuntu.com/4587-1/
- https://www.openwall.com/lists/oss-security/2018/12/10/8
Products affected by CVE-2018-20748
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cpe:2.3:a:libvnc_project:libvncserver:*
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cpe:2.3:h:siemens:simatic_itc1500:-
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cpe:2.3:h:siemens:simatic_itc1500_pro:-
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cpe:2.3:h:siemens:simatic_itc1900:-
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cpe:2.3:h:siemens:simatic_itc1900_pro:-
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cpe:2.3:h:siemens:simatic_itc2200:-
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cpe:2.3:h:siemens:simatic_itc2200_pro:-
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cpe:2.3:o:canonical:ubuntu_linux:14.04
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cpe:2.3:o:canonical:ubuntu_linux:16.04
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cpe:2.3:o:canonical:ubuntu_linux:18.04
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cpe:2.3:o:canonical:ubuntu_linux:18.10
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cpe:2.3:o:debian:debian_linux:8.0
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cpe:2.3:o:siemens:simatic_itc1500_firmware:3.0.0.0
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cpe:2.3:o:siemens:simatic_itc1500_pro_firmware:3.0.0.0
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cpe:2.3:o:siemens:simatic_itc1900_firmware:3.0.0.0
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cpe:2.3:o:siemens:simatic_itc1900_pro_firmware:3.0.0.0
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cpe:2.3:o:siemens:simatic_itc2200_firmware:3.0.0.0
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cpe:2.3:o:siemens:simatic_itc2200_pro_firmware:3.0.0.0