VulnerabilityModified
CVE-2019-8955
In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4.x before 0.4.0.2-alpha, remote denial of service against Tor clients and relays can occur via memory exhaustion in the KIST cell scheduler.
HIGH 7.5EPSS 4.57%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.57%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4.x before 0.4.0.2-alpha, remote denial of service against Tor clients and relays can occur via memory exhaustion in the KIST cell scheduler.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 4.57% probability · 91th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- torproject/tor
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00013.html
- http://www.securityfocus.com/bid/107136Third Party Advisory, VDB Entry
- https://blog.torproject.org/new-releases-tor-0402-alpha-0358-03411-and-03312Vendor Advisory
- https://trac.torproject.org/projects/tor/ticket/29168Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00013.html
- http://www.securityfocus.com/bid/107136Third Party Advisory, VDB Entry
- https://blog.torproject.org/new-releases-tor-0402-alpha-0358-03411-and-03312Vendor Advisory
- https://trac.torproject.org/projects/tor/ticket/29168Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.