CVE-2012-5573
The connection_edge_process_relay_cell function in or/relay.c in Tor before 0.2.3.25 maintains...
CVE-2012-5573 is a medium vulnerability (CVSS 5.0) in Torproject Tor, published January 1, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.15%, the 87th percentile. Fixed in tor 0.2.3.25-1.
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2012-5573- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2012-5573- Updated
- 2026-11-02
EUVDEUVD-2012-5463 No score
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.
- Record
EUVD-2012-5463- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-xvc4-r5fw-47j4 No score
The connection_edge_process_relay_cell function in or/relay.c in Tor before 0.2.3.25 maintains...
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.
- Record
GHSA-xvc4-r5fw-47j4- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2012-5573- Updated
- 2026-11-02
OSVDEBIAN-CVE-2012-5573 No score
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.
- Record
DEBIAN-CVE-2012-5573- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10423-1 No score
tor-0.2.8.11-1.1 on GA media
These are all security issues fixed in the tor-0.2.8.11-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10423-1- Updated
- 2026-11-02
OSVUBUNTU-CVE-2012-5573 No score
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.
- Record
UBUNTU-CVE-2012-5573- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
torDebian:12 |
before 0.2.3.25-1 | 0.2.3.25-1 |
torDebian:13 |
before 0.2.3.25-1 | 0.2.3.25-1 |
torDebian:14 |
before 0.2.3.25-1 | 0.2.3.25-1 |
torDebian:6.0 |
before 0.2.4.23-1~deb6u1, plus listed versions 0.2.1.29-10.2.1.30-10.2.1.31-10.2.1.31-1~lenny+10.2.1.32-1 Show 45 moreShow less0.2.2.1-alpha-10.2.2.10-alpha-10.2.2.10-alpha-20.2.2.11-alpha-10.2.2.12-alpha-10.2.2.13-alpha-10.2.2.14-alpha-10.2.2.15-alpha-10.2.2.16-alpha-10.2.2.17-alpha-10.2.2.18-alpha-10.2.2.18-alpha-20.2.2.19-alpha-10.2.2.2-alpha-10.2.2.20-alpha-10.2.2.21-alpha-10.2.2.22-alpha-10.2.2.23-alpha-10.2.2.27-beta-10.2.2.28-beta-10.2.2.29-beta-10.2.2.3-alpha-10.2.2.30-rc-10.2.2.31-rc-10.2.2.32-10.2.2.32-1~bpo60+10.2.2.33-10.2.2.33-1~bpo60+10.2.2.34-10.2.2.34-1~bpo60+10.2.2.35-10.2.2.35-1~squeeze+10.2.2.36-10.2.2.37-10.2.2.37-1~bpo60+10.2.2.37-1~squeeze+10.2.2.38-10.2.2.39-10.2.2.4-alpha-10.2.2.5-alpha-10.2.2.6-alpha-10.2.2.7-alpha-10.2.2.7-alpha-20.2.2.8-alpha-10.2.2.9-alpha-1 |
0.2.4.23-1~deb6u1 |
toropenSUSE:Tumbleweed |
before 0.2.8.11-1.1 | 0.2.8.11-1.1 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | affected | |
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
security.gentoo.org/glsa/glsa-201301-03.xml
trac.torproject.org/projects/tor/ticket/6252
bugs.gentoo.org/show_bug.cgi?id=444804
secunia.com/advisories/51329
gitweb.torproject.org/arma/tor.git/commitdiff/b9b54568c0bb64c32bd0b362954bdbc8c1234b16
openwall.com/lists/oss-security/2012/11/26/11
Show 30 moreShow less
exchange.xforce.ibmcloud.com/vulnerabilities/80289
bugzilla.redhat.com/show_bug.cgi?id=880310
nvd.nist.gov/vuln/detail/CVE-2012-5573
github.com/advisories/GHSA-xvc4-r5fw-47j4
security-tracker.debian.org/tracker/CVE-2012-5573
ubuntu.com/security/CVE-2012-5573
cve.org/CVERecord?id=CVE-2012-5573
suse.com/security/cve/CVE-2011-0427
Left out here: 50 versions. The JSON record has them.