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 rem

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.

Published 2020-03-23 13:15:13

Updated 2023-02-03 19:36:15

Source MITRE

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2020-10593

Opensuse » Leap » Version: 15.1
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
Matching versions
Opensuse » Backports Sle » Version: 15.0 Update SP1
cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*
Matching versions
Torproject » TOR
Versions after (>) 0.4.2.0 and up to, including, (<=) 0.4.2.7
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*
Matching versions
Torproject » TOR
Versions from including (>=) 0.3.5 and before (<) 0.3.5.10
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*
Matching versions
Torproject » TOR
Versions after (>) 0.4.1.0 and before (<) 0.4.1.9
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2020-10593

EPSS FAQ

1.21%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 77 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-10593

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2020-10593

CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-10593

https://security.gentoo.org/glsa/202003-50

Tor: Multiple vulnerabilities (GLSA 202003-50) — Gentoo security
Third Party Advisory

CVEs referencing this url
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00052.html

[security-announce] openSUSE-SU-2020:0428-1: moderate: Security update f
Mailing List;Third Party Advisory

CVEs referencing this url
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00045.html

[security-announce] openSUSE-SU-2020:0406-1: moderate: Security update f
Mailing List;Third Party Advisory

CVEs referencing this url
https://trac.torproject.org/projects/tor/ticket/33619

#33619 (Resolve TROVE-2020-004) – Tor Bug Tracker & Wiki
Issue Tracking;Third Party Advisory

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Vulnerability Details : CVE-2020-10593

Products affected by CVE-2020-10593

Exploit prediction scoring system (EPSS) score for CVE-2020-10593

CVSS scores for CVE-2020-10593

CWE ids for CVE-2020-10593

References for CVE-2020-10593