CVE-2021-38385
HIGH
7.5
CVSS Score
Published: August 30, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 04:01 AM UTC
1 product affected across 1 vendorTor
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Severity
HIGH7.5
Exploit prediction
EPSS 2%
Description
Tor before 0.3.5.16, 0.4.5.10, and 0.4.6.7 mishandles the relationship between batch-signature verification and single-signature verification, leading to a remote assertion failure, aka TROVE-2021-007.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 0.3.5.160.4.0.0 ≤ v < 0.4.5.100.4.6.0 ≤ v < 0.4.6.7
Affected range stops below 0.3.5.16, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.4.5.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.4.6.7, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (4)
ExploitIssue TrackingVendor Advisory
Source: [email protected]
https://bugs.torproject.org/tpo/core/tor/40078CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-617
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