CVE-2017-8821

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, an attacker can cause a denial of service (application hang) via crafted PEM input that signifies a public key requiring a password, which triggers an attempt by the OpenSSL library to ask the user for the password, aka TROVE-2017-011.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://bugs.torproject.org/24246	Vendor Advisory
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

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:tor_project:tor::::::::
	cpe:2.3:a:tor_project:tor::::::::
	cpe:2.3:a:tor_project:tor::::::::
	cpe:2.3:a:tor_project:tor::::::::
	cpe:2.3:a:tor_project:tor::::::::

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:8.0:::::::*
	cpe:2.3:o:debian:debian_linux:9.0:::::::*

Information

Published : 2017-12-02 23:29

Updated : 2017-12-21 10:06

NVD link : CVE-2017-8821

Mitre link : CVE-2017-8821

JSON object : View

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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Products Affected

debian

debian_linux

tor_project

tor

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