Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2020-10592 CVE-2020-10593 |
CWE-ID | CWE-400 CWE-401 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Tor Client/Desktop applications / Web browsers |
Vendor | tor.eff.org |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU26505
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-10592
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper resource management. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsTor: 0.3.5.0 - 0.4.2.6
External linkshttp://lists.opensuse.org/opensuse-security-announce/2020-03/msg00045.html
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00052.html
http://security.gentoo.org/glsa/202003-50
http://trac.torproject.org/projects/tor/ticket/33120
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU26506
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-10593
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak in "circpad_setup_machine_on_circ" because a circuit-padding machine can be negotiated twice on the same circuit. A remote attacker can cause a denial of service condition on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsTor: 0.3.5.0 - 0.4.2.6
External linkshttp://lists.opensuse.org/opensuse-security-announce/2020-03/msg00045.html
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00052.html
http://security.gentoo.org/glsa/202003-50
http://trac.torproject.org/projects/tor/ticket/33619
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.