CVE-2020-10593

HIGH
7.5
CVSS Score
Published: March 23, 2020 at 12:22 PM UTC
Updated: June 17, 2026 at 02:48 AM UTC
3 products affected across 2 vendorsLeapBackports SleTor

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Severity
HIGH7.5
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.3.5 ≤ v < 0.3.5.100.4.1.0 < v < 0.4.1.90.4.2.0 < v ≤ 0.4.2.7
Affected range stops below 0.3.5.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.4.1.9, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00045.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00052.html
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
https://security.gentoo.org/glsa/202003-50
x_refsource_MISCIssue TrackingThird Party Advisory
https://trac.torproject.org/projects/tor/ticket/33619

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

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