CVE-2021-34550: Buffer Overflow
First published: Tue Jun 29 2021(Updated: )
An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-006. The v3 onion service descriptor parsing allows out-of-bounds memory access, and a client crash, via a crafted onion service descriptor
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Torproject Tor | <0.3.5.15 | |
| Torproject Tor | >=0.4.0.0<0.4.4.9 | |
| Torproject Tor | >=0.4.5.0<0.4.5.9 | |
| Torproject Tor | >=0.4.6.0<0.4.6.5 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-34550?
CVE-2021-34550 is an issue discovered in Tor before 0.4.6.5, which allows out-of-bounds memory access and a client crash via a crafted onion service descriptor.
What is the severity of CVE-2021-34550?
The severity of CVE-2021-34550 is high, with a severity value of 7.5.
Which software is affected by CVE-2021-34550?
Tor versions up to and including 0.4.6.5, 0.3.5.15, 0.4.4.9, 0.4.5.9, and 0.4.6.0 are affected by CVE-2021-34550.
How can I fix CVE-2021-34550?
To fix CVE-2021-34550, users should update to Tor version 0.4.6.5 or later.
Where can I find more information about CVE-2021-34550?
More information about CVE-2021-34550 can be found at the following references: [1] [2] [3].
- collector/nvd-index
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/severity
- agent/author
- agent/weakness
- agent/last-modified-date
- agent/tags
- agent/event
- agent/description
- agent/softwarecombine
- agent/first-publish-date
- vendor/torproject
- canonical/torproject tor
- version/torproject tor/0.4.0.0
- version/torproject tor/0.4.5.0
- version/torproject tor/0.4.6.0