Test ID:	1.3.6.1.4.1.25623.1.0.891652
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DLA-1652-1)
Summary:	The remote host is missing an update for the Debian 'libvncserver' package(s) announced via the DLA-1652-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'libvncserver' package(s) announced via the DLA-1652-1 advisory. Vulnerability Insight: A vulnerability was found by Kaspersky Lab in libvncserver, a C library to implement VNC server/client functionalities. In addition, some of the vulnerabilities addressed in DLA 1617-1 were found to have incomplete fixes, and have been addressed in this update. CVE-2018-15126 An attacker can cause denial of service or remote code execution via a heap use-after-free issue in the tightvnc-filetransfer extension. CVE-2018-20748 / CVE-2018-20749 / CVE-2018-20750 Some of the out of bound heap write fixes for CVE-2018-20019 and CVE-2018-15127 were incomplete. These CVEs address those issues. For Debian 8 Jessie, these problems have been fixed in version 0.9.9+dfsg2-6.1+deb8u5. We recommend that you upgrade your libvncserver packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references] Affected Software/OS: 'libvncserver' package(s) on Debian 8. Solution: Please install the updated package(s). CVSS Score: 7.5 CVSS Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2018-15126 Debian Security Information: DSA-4383 (Google Search) https://www.debian.org/security/2019/dsa-4383 https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-027-libvnc-heap-use-after-free/ 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/ Common Vulnerability Exposure (CVE) ID: CVE-2018-20748 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://www.openwall.com/lists/oss-security/2018/12/10/8 https://usn.ubuntu.com/4547-1/ https://usn.ubuntu.com/4587-1/ Common Vulnerability Exposure (CVE) ID: CVE-2018-20749 BugTraq ID: 106825 http://www.securityfocus.com/bid/106825 https://github.com/LibVNC/libvncserver/commit/15bb719c03cc70f14c36a843dcb16ed69b405707 Common Vulnerability Exposure (CVE) ID: CVE-2018-20750 https://github.com/LibVNC/libvncserver/commit/09e8fc02f59f16e2583b34fe1a270c238bd9ffec
Copyright	Copyright (C) 2019 Greenbone AG

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