CVE-2020-10593

moderate-risk
Published 2020-03-23

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.

Do I need to act?

~
1.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (3)

Tor

Affected Vendors

Opensuse Torproject

References (8)

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
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
39
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 4/34 · Minimal
Exposure 9/34 · Low