Arch Linux update for tor

Published: 2017-06-13 | Updated: 2017-06-14

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-0375 CVE-2017-0376
CWE-ID	CWE-617
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Arch Linux Operating systems & Components / Operating system
Vendor	Arch Linux

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Reachable Assertion

EUVDB-ID: #VU31417

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-0375

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The hidden-service feature in Tor before 0.3.0.8 allows a denial of service (assertion failure and daemon exit) in the relay_send_end_cell_from_edge_ function via a malformed BEGIN cell.

Mitigation

Update the affected package tor to version 0.3.0.8-1.

Vulnerable software versions

Arch Linux: All versions

CPE2.3

cpe:2.3:o:arch_linux:arch_linux:*:*:*:*:*:*:*:*

External links

https://security.archlinux.org/advisory/ASA-201706-13

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.

2) Reachable Assertion

EUVDB-ID: #VU31418