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TI-2018-00447 Aliases CVE-2018-0490GHSA-f8j8-3mmq-3xxf

NULL pointer dereference in Tor

Priority LOW 38CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-476.

Summary

An issue was discovered in Tor before 0.2.9.15, 0.3.1.x before 0.3.1.10, and 0.3.2.x before 0.3.2.10. The directory-authority protocol-list subprotocol implementation allows remote attackers to cause a denial of service (NULL pointer dereference and directory-authority crash) via a misformatted relay descriptor that is mishandled during voting.

Why it matters now

EPSS 0.02641 85th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—TorTor—No fix listedCNA
  • Tor Vendor— Affected Tor Fixed in — No fix listed CNA

CPE configurations NVD · 17

CPEVersionsRoleVendor
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*up to 0.2.9.14; 0.3.1.7 – 0.3.1.9Vulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.1.1:alpha:*:*:*:*:*:*0.3.1.1 alphaVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.1.2:alpha:*:*:*:*:*:*0.3.1.2 alphaVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.1.3:alpha:*:*:*:*:*:*0.3.1.3 alphaVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.1.4:alpha:*:*:*:*:*:*0.3.1.4 alphaVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.1.5:alpha:*:*:*:*:*:*0.3.1.5 alphaVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.1.6:rc:*:*:*:*:*:*0.3.1.6 rcVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.2.1:alpha:*:*:*:*:*:*0.3.2.1 alphaVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.2.2:alpha:*:*:*:*:*:*0.3.2.2 alphaVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.2.3:alpha:*:*:*:*:*:*0.3.2.3 alphaVulnerabletorproject
  • cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* Versions up to 0.2.9.14; 0.3.1.7 – 0.3.1.9 Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.1.1:alpha:*:*:*:*:*:* Versions 0.3.1.1 alpha Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.1.2:alpha:*:*:*:*:*:* Versions 0.3.1.2 alpha Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.1.3:alpha:*:*:*:*:*:* Versions 0.3.1.3 alpha Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.1.4:alpha:*:*:*:*:*:* Versions 0.3.1.4 alpha Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.1.5:alpha:*:*:*:*:*:* Versions 0.3.1.5 alpha Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.1.6:rc:*:*:*:*:*:* Versions 0.3.1.6 rc Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.2.1:alpha:*:*:*:*:*:* Versions 0.3.2.1 alpha Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.2.2:alpha:*:*:*:*:*:* Versions 0.3.2.2 alpha Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.2.3:alpha:*:*:*:*:*:* Versions 0.3.2.3 alpha Vulnerable ·torproject
Show 7 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:torproject:tor:0.3.2.4:alpha:*:*:*:*:*:*0.3.2.4 alphaVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.2.5:alpha:*:*:*:*:*:*0.3.2.5 alphaVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.2.6:alpha:*:*:*:*:*:*0.3.2.6 alphaVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.2.7:rc:*:*:*:*:*:*0.3.2.7 rcVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.2.8:rc:*:*:*:*:*:*0.3.2.8 rcVulnerabletorproject
cpe:2.3:a:torproject:tor:0.3.2.9:*:*:*:*:*:*:*0.3.2.9Vulnerabletorproject
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
  • cpe:2.3:a:torproject:tor:0.3.2.4:alpha:*:*:*:*:*:* Versions 0.3.2.4 alpha Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.2.5:alpha:*:*:*:*:*:* Versions 0.3.2.5 alpha Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.2.6:alpha:*:*:*:*:*:* Versions 0.3.2.6 alpha Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.2.7:rc:*:*:*:*:*:* Versions 0.3.2.7 rc Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.2.8:rc:*:*:*:*:*:* Versions 0.3.2.8 rc Vulnerable ·torproject
  • cpe:2.3:a:torproject:tor:0.3.2.9:*:*:*:*:*:*:* Versions 0.3.2.9 Vulnerable ·torproject
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-0490
  2. 2026-10-03 Alias added: GHSA-f8j8-3mmq-3xxf

References

Advisory 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences