PT-2017-18557 · Tor+1 · Tor+1

Publicado

2017-12-01

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Atualizado

2024-06-15

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CVE-2017-8823

CVSS v3.1

8.1

Alta

VetorAV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Tor versions 0.2.6 through 0.2.8 before 0.2.8.17 Tor versions 0.2.9 before 0.2.9.14 Tor versions 0.3.0 before 0.3.0.13 Tor versions 0.3.1 before 0.3.1.9 Tor version 0.2.5.16 and earlier
Description The issue is related to a use-after-free error in onion service v2 during intro-point expiration. This occurs because the expiring list is mismanaged in certain error cases.
Recommendations For Tor versions 0.2.6 through 0.2.8 before 0.2.8.17, update to version 0.2.8.17 or later. For Tor versions 0.2.9 before 0.2.9.14, update to version 0.2.9.14 or later. For Tor versions 0.3.0 before 0.3.0.13, update to version 0.3.0.13 or later. For Tor versions 0.3.1 before 0.3.1.9, update to version 0.3.1.9 or later. For Tor version 0.2.5.16 and earlier, update to version 0.2.5.16 or later.

Correção

Use After Free

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dbugs@ptsecurity.com

Enumeração de Fraquezas

CWE-416

Identificadores relacionados

ALT-PU-2017-2718
CVE-2017-8823
DSA-4054-1
MGASA-2017-0444
OPENSUSE-SU-2017:3201-1
OPENSUSE-SU-2017:3203-1
OPENSUSE-SU-2024:11469-1

Produtos afetados

Alt Linux
Tor