8.1

CVE-2017-8823

In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, there is a use-after-free in onion service v2 during intro-point expiration because the expiring list is mismanaged in certain error cases, aka TROVE-2017-013.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Tor Project ≫ Tor Version < 0.2.5.16
Tor Project ≫ Tor Version >= 0.2.6 < 0.2.8.17
Tor Project ≫ Tor Version >= 0.2.9 < 0.2.9.14
Tor Project ≫ Tor Version >= 0.3.0 < 0.3.0.13
Tor Project ≫ Tor Version >= 0.3.1 < 0.3.1.9
Debian ≫ Debian Linux Version 8.0
Debian ≫ Debian Linux Version 9.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.6% 0.727
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 8.1 2.2 5.9
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NIST 6.8 8.6 6.4
AV:N/AC:M/Au:N/C:P/I:P/A:P
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516
Vendor Advisory
https://www.debian.org/security/2017/dsa-4054
Third Party Advisory
https://bugs.torproject.org/24313
Vendor Advisory
Issue Tracking
https://bugs.torproject.org/24430
Vendor Advisory