CVE-2012-5573

Description

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.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 2.48% Top 20%
Vendor Advisory gentoo.org Vendor Advisory torproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://security.gentoo.org/glsa/glsa-201301-03.xml vendor advisory
https://trac.torproject.org/projects/tor/ticket/6252 vendor advisory
https://bugs.gentoo.org/show_bug.cgi?id=444804
http://secunia.com/advisories/51329 third party advisory
https://gitweb.torproject.org/arma/tor.git/commitdiff/b9b54568c0bb64c32bd0b362954bdbc8c1234b16 patch
http://openwall.com/lists/oss-security/2012/11/26/11 mailing list
https://gitweb.torproject.org/tor.git/blob/release-0.2.3:/ReleaseNotes
https://exchange.xforce.ibmcloud.com/vulnerabilities/80289 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=880310

Frequently Asked Questions

What is the severity of CVE-2012-5573?
CVE-2012-5573 has been scored as a medium severity vulnerability.
How to fix CVE-2012-5573?
To fix CVE-2012-5573, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-5573 being actively exploited in the wild?
It is possible that CVE-2012-5573 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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