Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2019-8955 |
CWE-ID | CWE-125 |
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 one medium risk vulnerability.
EUVDB-ID: #VU31154
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-8955
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to an out-of-bounds read that occurs via memory exhaustion in the KIST cell scheduler.
MitigationUpdate to version 0.3.4.11.
Vulnerable software versionsTor: 0.3.4.8 - 0.3.4.10
External linkshttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00013.html
http://www.securityfocus.com/bid/107136
http://blog.torproject.org/new-releases-tor-0402-alpha-0358-03411-and-03312
http://trac.torproject.org/projects/tor/ticket/29168
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.