Information disclosure in tor (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-0380
CWE-ID CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 tor (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU8851

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-0380

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists in the rend_service_intro_established() function in 'or/rendservice.c due to the system may log uninitialized stack contents when a certain hidden service error occurs while SafeLogging is disabled. A remote attacker can use an error message about the construction of an introduction point circuit and gain access to potentially sensitive information from uninitialized stack memory.

Mitigation

Install update from vendor's website.

Vulnerable software versions

tor (Alpine package): 0.2.8.12-r0 - 0.3.0.8-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=93ed1f72fdd8a9a54799e43f3a85c534c2e7d3f1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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