High severity · published Mar 5, 2018
CVE-2018-0491
A use-after-free issue was discovered in Tor 0.3.2.x before 0.3.2.10
7.5
CVSS
14.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)14.8% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tor · Torproject
0.3.2.0 before 0.3.2.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-0491
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-0491
Vendor Advisory
https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915
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/
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