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CVE-2017-8823

N/A
Published: December 3, 2017 at 07:00 AM UTC
Updated: June 17, 2026 at 01:27 AM UTC
2 products affected across 2 vendorsDebian LinuxTor

Using 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 by N/A?

Get instant alerts when new vulnerabilities affect 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 - before attackers find them.

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Severity
N/A
Exploit prediction
EPSS 2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
8.09.0
Tor· Torproject
95%
v < 0.2.5.160.2.6 ≤ v < 0.2.8.170.2.9 ≤ v < 0.2.9.140.3.0 ≤ v < 0.3.0.130.3.1 ≤ v < 0.3.1.9
Affected range stops below 0.2.5.16, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.2.8.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.2.9.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.3.0.13, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.3.1.9, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516
x_refsource_CONFIRMIssue TrackingVendor Advisory
Source: [email protected]
https://bugs.torproject.org/24313
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://bugs.torproject.org/24430
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2017/dsa-4054

CVSS

6.8MEDIUM[email protected]
Confidentiality
PARTIAL
Integrity
PARTIAL
Availability
PARTIAL
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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