5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
6.3 Medium
AI Score
Confidence
Low
0.306 Low
EPSS
Percentile
97.0%
Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha does not properly check the amount of compression in zlib-compressed data, which allows remote attackers to cause a denial of service via a large compression factor.
archives.seul.org/or/announce/Jan-2011/msg00000.html
blog.torproject.org/blog/tor-02129-released-security-patches
secunia.com/advisories/42905
secunia.com/advisories/42907
www.debian.org/security/2011/dsa-2148
www.openwall.com/lists/oss-security/2011/01/18/7
www.securityfocus.com/bid/45832
www.securitytracker.com/id?1024980
www.vupen.com/english/advisories/2011/0131
www.vupen.com/english/advisories/2011/0132
gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog
trac.torproject.org/projects/tor/ticket/2324