CVE-2017-8819
Last modified
CVE-2017-8819 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.43% chance of exploitation in the next 30 days.
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.
Metrics
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Tor Project | Tor | < 0.2.5.16 |
| Tor Project | Tor | >= 0.2.6, < 0.2.8.17 |
| Tor Project | Tor | >= 0.2.9, < 0.2.9.14 |
| Tor Project | Tor | >= 0.3.0, < 0.3.0.13 |
| Tor Project | Tor | >= 0.3.1, < 0.3.1.9 |
| Debian | Debian Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
References
- https://bugs.torproject.org/24244Vendor Advisory
- https://www.debian.org/security/2017/dsa-4054Third Party Advisory
- https://bugs.torproject.org/24244Vendor Advisory
- https://www.debian.org/security/2017/dsa-4054Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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