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CVE-2017-0380

The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x...

5.9 MediumFix available

The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x before 0.2.9.12, 0.3.0.x before 0.3.0.11, 0.3.1.x before 0.3.1.7, and 0.3.2.x before 0.3.2.1-alpha, when SafeLogging is disabled, allows attackers to obtain sensitive information by leveraging access to the log files of a hidden service, because uninitialized stack data is included in an error message about construction of an introduction point circuit.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

1.54%Up 0.5 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.9

The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x before 0.2.9.12, 0.3.0.x before 0.3.0.11, 0.3.1.x before 0.3.1.7, and 0.3.2.x before 0.3.2.1-alpha, when SafeLogging is disabled, allows attackers to obtain sensitive information by leveraging access to the log files of a hidden service, because uninitialized stack data is included in an error message about construction of an introduction point circuit.

Record
CVE-2017-0380
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:P/I:N/A:N
Weakness
CWE-532
Updated
2026-11-02
CVE List No score

The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x before 0.2.9.12, 0.3.0.x before 0.3.0.11, 0.3.1.x before 0.3.1.7, and 0.3.2.x before 0.3.2.1-alpha, when SafeLogging is disabled, allows attackers to obtain sensitive information by leveraging access to the log files of a hidden service, because uninitialized stack data is included in an error message about construction of an introduction point circuit.

Record
CVE-2017-0380
Updated
2026-11-02
EUVDEUVD-2017-0734 No score

The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x before 0.2.9.12, 0.3.0.x before 0.3.0.11, 0.3.1.x before 0.3.1.7, and 0.3.2.x before 0.3.2.1-alpha, when SafeLogging is disabled, allows attackers to obtain sensitive information by leveraging access to the log files of a hidden service, because uninitialized stack data is included in an error message about construction of an introduction point circuit.

Record
EUVD-2017-0734
Updated
2026-11-03
GitHub AdvisoriesGHSA-rjc9-v6hh-hq3j 5.9

The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x...

The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x before 0.2.9.12, 0.3.0.x before 0.3.0.11, 0.3.1.x before 0.3.1.7, and 0.3.2.x before 0.3.2.1-alpha, when SafeLogging is disabled, allows attackers to obtain sensitive information by leveraging access to the log files of a hidden service, because uninitialized stack data is included in an error message about construction of an introduction point circuit.

Record
GHSA-rjc9-v6hh-hq3j
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-532
Updated
2026-11-02
OSV 5.9

The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x before 0.2.9.12, 0.3.0.x before 0.3.0.11, 0.3.1.x before 0.3.1.7, and 0.3.2.x before 0.3.2.1-alpha, when SafeLogging is disabled, allows attackers to obtain sensitive information by leveraging access to the log files of a hidden service, because uninitialized stack data is included in an error message about construction of an introduction point circuit.

Record
CVE-2017-0380
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2017-0380 5.9

The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x before 0.2.9.12, 0.3.0.x before 0.3.0.11, 0.3.1.x before 0.3.1.7, and 0.3.2.x before 0.3.2.1-alpha, when SafeLogging is disabled, allows attackers to obtain sensitive information by leveraging access to the log files of a hidden service, because uninitialized stack data is included in an error message about construction of an introduction point circuit.

Record
DEBIAN-CVE-2017-0380
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2017-0380 5.9

The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x before 0.2.9.12, 0.3.0.x before 0.3.0.11, 0.3.1.x before 0.3.1.7, and 0.3.2.x before 0.3.2.1-alpha, when SafeLogging is disabled, allows attackers to obtain sensitive information by leveraging access to the log files of a hidden service, because uninitialized stack data is included in an error message about construction of an introduction point circuit.

Record
UBUNTU-CVE-2017-0380
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVMGASA-2017-0353 No score

Updated tor packages fix security vulnerability

Due to the code that reports an error during the construction of an introduction point circuit, it is possible that some hidden services will sometimes write sensitive information into their logs if the SafeLogging option is disabled. Note that SafeLogging is enabled by default (CVE-2017-0380).

Record
MGASA-2017-0353
Updated
2026-11-02
OSVopenSUSE-SU-2024:11469-1 No score

tor-0.4.6.7-2.2 on GA media

These are all security issues fixed in the tor-0.4.6.7-2.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11469-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
tor
Debian:12
before 0.3.1.7-1
0.3.1.7-1
tor
Debian:13
before 0.3.1.7-1
0.3.1.7-1
tor
Debian:14
before 0.3.1.7-1
0.3.1.7-1
tor
Debian:9
before 0.2.9.12-1, plus listed versions
0.2.9.10-10.2.9.11-10.2.9.11-1~bpo8+10.2.9.11-1~deb9u10.2.9.12-1~bpo8+1
0.2.9.12-1
tor
Mageia:5
before 0.2.8.15-1.mga5
0.2.8.15-1.mga5
tor
Mageia:6
before 0.2.9.12-1.mga6
0.2.9.12-1.mga6
tor
Ubuntu:16.04:LTS
before 0.2.9.14-1ubuntu1~16.04.2, plus listed versions
0.2.6.10-1ubuntu20.2.7.6-1ubuntu10.2.9.11-1ubuntu1~16.04.10.2.9.14-1ubuntu1~16.04.1
0.2.9.14-1ubuntu1~16.04.2
tor
openSUSE:Tumbleweed
before 0.4.6.7-2.2
0.4.6.7-2.2

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-0380 is a medium vulnerability (CVSS 5.9) in Torproject Tor, published September 18, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.54%, the 75th percentile. Fixed in tor 0.3.1.7-1.

References

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