PT-2019-18956 · Ultravnc · Ultravnc

Publicado 2019-03-05 · Atualizado 2021-06-28 · CVE-2019-8259

Positive Technologies (AI Summary)

CVSS v3.1

7.5

Alta

Vetor base

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

Name of the Vulnerable Software and Affected Versions UltraVNC revision 1198

Description The issue is related to multiple memory leaks in VNC client code, allowing an attacker to read stack memory, which can be used for information disclosure. When combined with another vulnerability, it can leak stack memory and bypass ASLR. This attack is exploitable via network connectivity.

Recommendations For UltraVNC revision 1198, update to revision 1199 to resolve the issue. As a temporary workaround, consider restricting network connectivity to minimize the risk of exploitation.

Correção

Memory Leak

Improper Initialization

Enumeração de Fraquezas

CWE-401

CWE-665

Identificadores relacionados

CVE-2019-8259

Produtos afetados

Ultravnc

Referências · 9

• https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf · Nota
• https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf · Nota
• https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11 · Nota
• https://osv.dev/vulnerability/CVE-2019-8259 · Aviso do Fabricante
• https://us-cert.gov/ics/advisories/icsa-20-161-06 · Nota
• https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-005-ultravnc-memory-leak · Nota
• https://t.me/cvenotify/16772 · Publicação no Telegram
• https://nvd.nist.gov/vuln/detail/CVE-2019-8259 · Nota de Segurança
• https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf · Nota