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CVE-2017-8823

nvd nist
Published: Dec 3, 2017Modified: May 13, 2026

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8.1
Vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 2.2 / Impact: 5.9
Source: NVD

Description

In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, there is a use-after-free in onion service v2 during intro-point expiration because the expiring list is mismanaged in certain error cases, aka TROVE-2017-013.

Affected (7)

Tor Project
1 product
Tor
Debian
1 product
Debian Linux
Configuration A
5 vulnerable
Vulnerable SoftwareAffected Versions
Tor Project
Tor
Before 0.2.5.16
Tor
From 0.2.6 to 0.2.8.17
Tor
From 0.2.9 to 0.2.9.14
Tor
From 0.3.0 to 0.3.0.13
Tor
From 0.3.1 to 0.3.1.9
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Debian
Debian Linux
Version 8.0
Debian Linux
Version 9.0

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (8)

Source: security@debian.org
Vendor Advisory
Source: security@debian.org
Issue TrackingVendor Advisory
Source: security@debian.org
Vendor Advisory
Source: security@debian.org
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.