PT-2017-18554 · Tor+1 · Tor+1
Published
2017-12-01
·
Updated
2024-06-15
·
CVE-2017-8820
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Tor versions 0.2.5 through 0.2.5.15
Tor versions 0.2.6 through 0.2.8.16
Tor versions 0.2.9 through 0.2.9.13
Tor versions 0.3.0 through 0.3.0.12
Tor versions 0.3.1 through 0.3.1.8
Description
The issue allows remote attackers to cause a denial of service against directory authorities via a malformed descriptor. This can result in a NULL pointer dereference and application crash.
Recommendations
For Tor versions 0.2.5 through 0.2.5.15, update to version 0.2.5.16 or later.
For Tor versions 0.2.6 through 0.2.8.16, update to version 0.2.8.17 or later.
For Tor versions 0.2.9 through 0.2.9.13, update to version 0.2.9.14 or later.
For Tor versions 0.3.0 through 0.3.0.12, update to version 0.3.0.13 or later.
For Tor versions 0.3.1 through 0.3.1.8, update to version 0.3.1.9 or later.
Fix
DoS
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Tor