PT-2019-5749 · Tightvnc+1 · Tightvnc+1

Pavel Cheremushkin · Published 2019-10-29 · Updated 2020-12-09 · CVE-2019-8287

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions TightVNC version 1.3.10

Description The issue is related to a global buffer overflow in the HandleCoRREBBP macro function. This can potentially result in code execution and is exploitable via network connectivity. The vulnerability is associated with a lack of mechanism for checking the size of copied data, which can allow a remote attacker to access confidential data, compromise its integrity, and cause a denial of service.

Recommendations For TightVNC version 1.3.10, consider disabling the HandleCoRREBBP macro function as a temporary workaround until a patch is available. Restrict access to the vulnerable function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

BDU:2021-01317

CVE-2019-8287

DLA-2045-1

SUSE-SU-2019:14235-1

SUSE-SU-2019_14235-1

Affected Products

Suse

Tightvnc

References · 24

• https://nvd.nist.gov/vuln/detail/CVE-2019-8287 · Security Note
• https://ubuntu.com/security/CVE-2019-8287 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-8287 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:14235-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-8287 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-8287 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-8287 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2045-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01317 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2019-8287 · Vendor Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-478893.pdf · Note
• https://bugzilla.suse.com/1155442 · Note
• https://openwall.com/lists/oss-security/2018/12/10/5 · Note
• https://suse.com/security/cve/CVE-2019-15678 · Note
• https://suse.com/security/cve/CVE-2019-15679 · Note