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CVE-2018-20748

Good to know:

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Date: January 30, 2019

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.

Language: C

Severity Score

Related Resources (17)

https://github.com/LibVNC/libvncserver/commit/e34bcbb759ca5bef85809967a268fdf214c1ad2c
https://usn.ubuntu.com/3877-1/
https://nvd.nist.gov/vuln/detail/CVE-2018-20748
https://access.redhat.com/security/cve/CVE-2018-20748
https://usn.ubuntu.com/4547-1/
https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html
https://github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42bae
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
https://github.com/LibVNC/libvncserver/commit/c5ba3fee85a7ecbbca1df5ffd46d32b92757bc2a
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-20748
https://usn.ubuntu.com/4587-1/
https://www.openwall.com/lists/oss-security/2018/12/10/8
https://github.com/LibVNC/libvncserver/issues/273
https://security-tracker.debian.org/tracker/CVE-2018-20748
https://github.com/LibVNC/libvncserver/commit/c2c4b81e6cb3b485fb1ec7ba9e7defeb889f6ba7
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
https://www.mend.io/vulnerability-database/CVE-2018-20748

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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