Vulnerability Details : CVE-2012-5573
The connection_edge_process_relay_cell function in or/relay.c in Tor before 0.2.3.25 maintains circuits even if an unexpected SENDME cell arrives, which might allow remote attackers to cause a denial of service (memory consumption or excessive cell reception rate) or bypass intended flow-control restrictions via a RELAY_COMMAND_SENDME command.
Vulnerability category: Denial of service
Products affected by CVE-2012-5573
- cpe:2.3:a:torproject:tor:*:rc:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.3.21:rc:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.3.20:rc:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.33:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.32:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.31:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.30:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.0.35:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.0.34:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.0.33:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.0.32:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.1.22:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.1.21:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.1.20:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.0.17:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.9.3:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.9.2:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.9.10:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.9.1:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre26:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre25:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre24:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre23:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre22:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.3.15:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.3.14:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.3.13:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.3:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.25:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.24:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.23:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.22:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.2.16:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.2.15:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.2.14:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.2.13:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.0.12:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.0.11:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.0.10:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.9.9:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.9.8:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.7:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.6.2:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.6.1:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.6:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre17:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre16:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre15:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre14:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.3.19:rc:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.3.17:beta:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.37:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.35:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.28:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.26:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.21:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.19:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.0.30:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.2.18:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.1.25:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.1.23:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.0.16:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.0.14:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.9.7:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.9.5:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.7.3:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.7.1:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.5:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre21:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre19:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.3.18:rc:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.3.16:alpha:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.38:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.36:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.34:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.29:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.27:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.20:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.2.18:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.0.31:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.2.19:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.2.17:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.1.26:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.1.24:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.0.15:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.1.0.13:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.9.6:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.9.4:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.8.1:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.7.2:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre27:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre20:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre18:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.0.2:pre13:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.3.22:rc:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:0.2.3.23:rc:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2012-5573
3.76%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2012-5573
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
CWE ids for CVE-2012-5573
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2012-5573
-
https://trac.torproject.org/projects/tor/ticket/6252
#6252 (We obey sendme cells even when we shouldn't get them) – Tor Bug Tracker & WikiVendor Advisory
-
https://gitweb.torproject.org/tor.git/blob/release-0.2.3:/ReleaseNotes
-
https://gitweb.torproject.org/arma/tor.git/commitdiff/b9b54568c0bb64c32bd0b362954bdbc8c1234b16
cgit errorPatch
-
https://bugs.gentoo.org/show_bug.cgi?id=444804
444804 – (CVE-2012-5573) <net-misc/tor-0.2.3.25: Denial of Service Vulnerability (CVE-2012-5573)
-
https://bugzilla.redhat.com/show_bug.cgi?id=880310
880310 – (CVE-2012-5573) CVE-2012-5573 tor: denial of service when handling SENDME cells
-
http://security.gentoo.org/glsa/glsa-201301-03.xml
Tor: Multiple vulnerabilities (GLSA 201301-03) — Gentoo security
-
http://openwall.com/lists/oss-security/2012/11/26/11
oss-security - Re: tor DoS via SENDME cells
-
https://exchange.xforce.ibmcloud.com/vulnerabilities/80289
Tor SENDME denial of service CVE-2012-5573 Vulnerability Report
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