CVE-2018-0491

moderate-risk
Published 2018-03-05

A use-after-free issue was discovered in Tor 0.3.2.x before 0.3.2.10. It allows remote attackers to cause a denial of service (relay crash) because the KIST implementation allows a channel to be added more than once in the pending list.

Do I need to act?

~
8.0% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
44994
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Tor

Affected Vendors

Torproject

References (8)

Vendor Advisory https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-preve...
Issue Tracking https://trac.torproject.org/projects/tor/ticket/24700
Issue Tracking https://trac.torproject.org/projects/tor/ticket/25117
Exploit https://www.exploit-db.com/exploits/44994/
Vendor Advisory https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-preve...
Issue Tracking https://trac.torproject.org/projects/tor/ticket/24700
Issue Tracking https://trac.torproject.org/projects/tor/ticket/25117
Exploit https://www.exploit-db.com/exploits/44994/
41
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 10/34 · Low
Exposure 5/34 · Minimal