#VU31385 Buffer overflow in Tor - CVE-2016-1254
Vulnerability identifier: #VU31385
Vulnerability 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:
CWE-ID:
CWE-119
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Tor
Client/Desktop applications /
Web browsers
Vendor: tor.eff.org
Description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Tor before 0.2.8.12 might allow remote attackers to cause a denial of service (client crash) via a crafted hidden service descriptor.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Tor: 0.2.8.1 - 0.2.8.11
External links
https://lists.opensuse.org/opensuse-updates/2016-12/msg00154.html
https://lists.opensuse.org/opensuse-updates/2016-12/msg00155.html
https://blog.torproject.org/blog/tor-02812-released
https://gitweb.torproject.org/tor.git/commit/?id=d978216dea6b21ac38230a59d172139185a68dbd
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FXOJSMCTIOHLBRYFBVEL3CDLGPZXX6WE/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GTU2R253477RZLYAJAR5DAXAON7KIVLA/
https://trac.torproject.org/projects/tor/ticket/21018
https://www.debian.org/security/2016/dsa-3741
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.
