vulnwire
8.1high

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…

Published 8 y ago · modified 4 mo ago · JSON

CVSS
8.1
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.6%
percentile 76%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

1.60% probability of exploitation in the next 30 days, higher than 76% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.08.1CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD2.06.8AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • n/a 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

Classification

Weakness

References

  • bugs.torproject.org /24313 · x_refsource_CONFIRM, x_transferred
  • blog.torproject.org /new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516 · x_refsource_CONFIRM, x_transferred
  • bugs.torproject.org /24430 · x_refsource_CONFIRM, x_transferred
  • debian.org /security/2017/dsa-4054 · vendor-advisory, x_refsource_DEBIAN, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.