CVE-2017-8819
High
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, the replay-cache protection mechanism is ineffective for v2 onion services, aka TROVE-2017-009. An attacker can send many INTRODUCE2 cells to trigger this issue.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Tor
PublishedDec 3, 2017
First seenDec 3, 2017
How to fix
Update
- tor_project tor0.2.5.16, 0.2.8.17, 0.2.9.14, 0.3.0.13, 0.3.1.9 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| tor_project tor | v < 0.2.5.16, 0.2.6 ≤ v < 0.2.8.17, 0.2.9 ≤ v < 0.2.9.14, 0.3.0 ≤ v < 0.3.0.13, 0.3.1 ≤ v < 0.3.1.9 | 0.2.5.16, 0.2.8.17, 0.2.9.14, 0.3.0.13, 0.3.1.9 |
| debian debian_linux | 8.0, 9.0 | — |
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