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CVE-2011-2769

Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in...

4.3 MediumFix available

Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command field of a cell within an OR connection that it initiated, which allows remote relays to enumerate bridges by using these values.

Exploit likelihood

1.14%Up 0.3 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 4.3

Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command field of a cell within an OR connection that it initiated, which allows remote relays to enumerate bridges by using these values.

Record
CVE-2011-2769
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:P/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
CVE List No score

Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command field of a cell within an OR connection that it initiated, which allows remote relays to enumerate bridges by using these values.

Record
CVE-2011-2769
Updated
2026-11-02
EUVDEUVD-2011-2743 No score

Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command field of a cell within an OR connection that it initiated, which allows remote relays to enumerate bridges by using these values.

Record
EUVD-2011-2743
Updated
2026-11-03
GitHub AdvisoriesGHSA-8686-9px5-f96f No score

Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in...

Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command field of a cell within an OR connection that it initiated, which allows remote relays to enumerate bridges by using these values.

Record
GHSA-8686-9px5-f96f
Weakness
CWE-200
Updated
2026-11-02
OSV No score

Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command field of a cell within an OR connection that it initiated, which allows remote relays to enumerate bridges by using these values.

Record
CVE-2011-2769
Updated
2026-11-02
OSVDEBIAN-CVE-2011-2769 No score

Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command field of a cell within an OR connection that it initiated, which allows remote relays to enumerate bridges by using these values.

Record
DEBIAN-CVE-2011-2769
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

Affected products

Affected packages

Affected packages
PackageAffectedFixed
tor
Debian:12
before 0.2.2.34-1
0.2.2.34-1
tor
Debian:13
before 0.2.2.34-1
0.2.2.34-1
tor
Debian:14
before 0.2.2.34-1
0.2.2.34-1
tor
Debian:6.0
before 0.2.1.31-1, plus listed versions
0.2.1.29-10.2.1.30-10.2.1.31-1~lenny+1
0.2.1.31-1
tor
Debian:5.0
before 0.2.1.31-1~lenny+1, plus listed versions
0.2.0.33-10.2.0.34-10.2.0.34-1~bpo40+10.2.0.35-10.2.0.35-1~lenny1
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0.2.0.35-1~lenny20.2.1.10-alpha-10.2.1.11-alpha-10.2.1.12-alpha-10.2.1.13-alpha-10.2.1.14-rc-10.2.1.15-rc-10.2.1.16-rc-10.2.1.17-rc-10.2.1.18-10.2.1.19-10.2.1.2-alpha-10.2.1.20-10.2.1.20-20.2.1.21-10.2.1.21-1~bpo50+10.2.1.22-10.2.1.22-1~bpo50+10.2.1.23-10.2.1.23-20.2.1.25-10.2.1.25-1~bpo50+10.2.1.25-20.2.1.25-30.2.1.26-10.2.1.26-1~bpo50+10.2.1.26-1~lenny+10.2.1.26-1~lenny+20.2.1.26-1~lenny+40.2.1.26-1~lennyvolatile10.2.1.26-1~lennyvolatile20.2.1.26-20.2.1.26-30.2.1.26-40.2.1.26-4~bpo50+10.2.1.26-50.2.1.26-60.2.1.26-6~bpo50+10.2.1.29-10.2.1.29-1~lenny+10.2.1.30-10.2.1.4-alpha-10.2.1.5-alpha-10.2.1.6-alpha-10.2.1.7-alpha-1
0.2.1.31-1~lenny+1
tor
openSUSE:Tumbleweed
before 0.2.8.11-1.1
0.2.8.11-1.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-2769 is a medium vulnerability (CVSS 4.3) in Tor, published October 28, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.14%, the 66th percentile. Fixed in tor 0.2.2.34-1.

References

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Left out here: 3 versions. The JSON record has them.

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