Tor before 0.2.4.20, when OpenSSL 1.x is used in conjunction with a certain HardwareAccel…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Tor before 0.2.4.20, when OpenSSL 1.x is used in conjunction with a certain HardwareAccel setting on Intel Sandy Bridge and Ivy Bridge platforms, does not properly generate random numbers for (1) relay identity keys and (2) hidden-service identity keys, which might make it easier for remote attackers to bypass cryptographic protection mechanisms via unspecified vectors.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 19
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* | up to 0.2.4.19 | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.1:alpha:*:*:*:*:*:* | 0.2.4.1 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.2:alpha:*:*:*:*:*:* | 0.2.4.2 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.3:alpha:*:*:*:*:*:* | 0.2.4.3 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.4:alpha:*:*:*:*:*:* | 0.2.4.4 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.5:alpha:*:*:*:*:*:* | 0.2.4.5 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.6:alpha:*:*:*:*:*:* | 0.2.4.6 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.7:alpha:*:*:*:*:*:* | 0.2.4.7 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.8:alpha:*:*:*:*:*:* | 0.2.4.8 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.9:alpha:*:*:*:*:*:* | 0.2.4.9 alpha | Vulnerable | torproject |
- cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* Versions up to 0.2.4.19 Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.1:alpha:*:*:*:*:*:* Versions 0.2.4.1 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.2:alpha:*:*:*:*:*:* Versions 0.2.4.2 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.3:alpha:*:*:*:*:*:* Versions 0.2.4.3 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.4:alpha:*:*:*:*:*:* Versions 0.2.4.4 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.5:alpha:*:*:*:*:*:* Versions 0.2.4.5 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.6:alpha:*:*:*:*:*:* Versions 0.2.4.6 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.7:alpha:*:*:*:*:*:* Versions 0.2.4.7 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.8:alpha:*:*:*:*:*:* Versions 0.2.4.8 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.9:alpha:*:*:*:*:*:* Versions 0.2.4.9 alpha Vulnerable ·torproject
Show 9 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:torproject:tor:0.2.4.10:alpha:*:*:*:*:*:* | 0.2.4.10 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.11:alpha:*:*:*:*:*:* | 0.2.4.11 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.12:alpha:*:*:*:*:*:* | 0.2.4.12 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.13:alpha:*:*:*:*:*:* | 0.2.4.13 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.14:alpha:*:*:*:*:*:* | 0.2.4.14 alpha | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.15:rc:*:*:*:*:*:* | 0.2.4.15 rc | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.16:rc:*:*:*:*:*:* | 0.2.4.16 rc | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.17:rc:*:*:*:*:*:* | 0.2.4.17 rc | Vulnerable | torproject |
| cpe:2.3:a:torproject:tor:0.2.4.18:rc:*:*:*:*:*:* | 0.2.4.18 rc | Vulnerable | torproject |
- cpe:2.3:a:torproject:tor:0.2.4.10:alpha:*:*:*:*:*:* Versions 0.2.4.10 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.11:alpha:*:*:*:*:*:* Versions 0.2.4.11 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.12:alpha:*:*:*:*:*:* Versions 0.2.4.12 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.13:alpha:*:*:*:*:*:* Versions 0.2.4.13 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.14:alpha:*:*:*:*:*:* Versions 0.2.4.14 alpha Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.15:rc:*:*:*:*:*:* Versions 0.2.4.15 rc Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.16:rc:*:*:*:*:*:* Versions 0.2.4.16 rc Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.17:rc:*:*:*:*:*:* Versions 0.2.4.17 rc Vulnerable ·torproject
- cpe:2.3:a:torproject:tor:0.2.4.18:rc:*:*:*:*:*:* Versions 0.2.4.18 rc Vulnerable ·torproject
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2013-7295
- 2026-10-03 Alias added: GHSA-3x57-m985-pg67
References
More torproject Tor vulnerabilities
- TI-2016-07433 Use after free in Mozilla Firefox KEVCVSS 3.1HIGH 7.5
- TI-2023-09419 The SafeSocks option in Tor before 0.4.7.13 has a logic error in which the unsafe SOCKS4… CVSS 3.1MEDIUM 6.5
- TI-2018-00448 Use after free in Tor CVSS 3.0HIGH 7.5
- TI-2026-54108 Race condition in torproject Tor CVSS 3.1CRITICAL 9.0
- TI-2026-54112 Out-of-bounds write in torproject Tor CVSS 3.1CRITICAL 9.3
- TI-2026-32508 Tor before 0.4.9.7 has an out-of-bounds read when an END, a TRUNCATE, or a TRUNCATED cell… CVSS 3.1CRITICAL 9.1
Sources
- CVE-2013-7295 · CVE Program
- CVE-2013-7295 · NVD
- FIRST EPSS
- GHSA-3x57-m985-pg67 · GitHub Advisory Database · CC BY 4.0
- CVE-2013-7295 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences