PT-2018-2464 · Libvnc+3 · Libvnc+3

Pavel Cheremushkin · Published 2018-08-14 · Updated 2019-10-31 · CVE-2018-6307

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions LibVNC versions prior to commit ca2a5ac02fbbadd0a21fabba779c1ea69173d10b

Description The issue is related to a heap use-after-free vulnerability in the server code of the file transfer extension. This can allow a remote attacker to execute arbitrary code.

Recommendations For versions prior to commit ca2a5ac02fbbadd0a21fabba779c1ea69173d10b, update to a version that includes the fix for this issue. As a temporary workaround, consider disabling the file transfer extension until a patch is available. Restrict access to the server code to minimize the risk of exploitation.

Fix

RCE

Unrestricted File Upload

Use After Free

Weakness Enumeration

CWE-434

CWE-416

Related Identifiers

ALT-PU-2019-2585

ALT-PU-2019-2662

BDU:2019-00705

CVE-2018-6307

DLA-1617-1

DLA-1979-1

DSA-4383-1

MGASA-2019-0037

OPENSUSE-SU-2019:0053-1

OPENSUSE-SU-2019_0045-1

OPENSUSE-SU-2019_0053-1

OPENSUSE-SU-2024:10598-1

SUSE-SU-2019:0060-1

SUSE-SU-2019:0060-2

SUSE-SU-2019:0080-1

SUSE-SU-2019:13927-1

USN-3877-1

Affected Products

Alt Linux

Libvnc

Suse

Ubuntu

References · 66

• https://osv.dev/vulnerability/SUSE-SU-2019:0060-2 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-1979-1 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-1617-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-6307 · Security Note
• https://ubuntu.com/security/CVE-2018-20019 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20024 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-00705 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-6307 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3877-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20749 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0037 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20021 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:0080-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:0053-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-6307 · Vendor Advisory