High severity · published Mar 23, 2020
CVE-2020-10593
Tor before 0.3.5.10, 0.4.x before 0.4.1.9, and 0.4.2.x before 0.4.2.7 allows remote attackers to cause a Denial of Service (memory leak), aka TROVE-2020-004
7.5
CVSS
2.3%
EPSS
No
On KEV
Description
Tor before 0.3.5.10, 0.4.x before 0.4.1.9, and 0.4.2.x before 0.4.2.7 allows remote attackers to cause a Denial of Service (memory leak), aka TROVE-2020-004. This occurs in circpad_setup_machine_on_circ because a circuit-padding machine can be negotiated twice on the same circuit.
CVSS vector
CVSS:3.1/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)2.3% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BS
Backports Sle · Opensuse
15.0 · source: NVD
LE
Leap · Opensuse
15.1 · source: NVD
TO
Tor · Torproject
0.3.5 before 0.3.5.10; after 0.4.1.0 before 0.4.1.9; after 0.4.2.0 through 0.4.2.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-10593
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-10593
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00045.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00052.html
Third Party Advisory
https://security.gentoo.org/glsa/202003-50
Issue Tracking
https://trac.torproject.org/projects/tor/ticket/33619
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