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CVE-2011-4897

Tor before 0.2.2.25-alpha, when configured as a relay without the Nickname configuration option,...

4.3 MediumFix available

CVE-2011-4897 is a medium vulnerability (CVSS 4.3) in Tor, published December 23, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.53%, the 75th percentile. Fixed in tor 0.2.2.27-beta-1.

What does this mean?
Severity
4.3 MediumCVSS 2.0, NVD
Exploit chance
1.53%EPSS, 75th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
0.2.2.27-beta-1tor +3 more

Description

Tor before 0.2.2.25-alpha, when configured as a relay without the Nickname configuration option, uses the local hostname as the Nickname value, which allows remote attackers to obtain potentially sensitive information by reading this value.

Exploit likelihood

1.53%Up 0.5 points since Feb 4, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
tor
Debian:12
before 0.2.2.27-beta-1
0.2.2.27-beta-1
tor
Debian:13
before 0.2.2.27-beta-1
0.2.2.27-beta-1
tor
Debian:14
before 0.2.2.27-beta-1
0.2.2.27-beta-1
tor
openSUSE:Tumbleweed
From an advisory covering 22 CVEs
before 0.2.8.11-1.1
0.2.8.11-1.1

What each source reports

NVD Score used4.3

Tor before 0.2.2.25-alpha, when configured as a relay without the Nickname configuration option, uses the local hostname as the Nickname value, which allows remote attackers to obtain potentially sensitive information by reading this value.

Record
CVE-2011-4897
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 ListNo score

Tor before 0.2.2.25-alpha, when configured as a relay without the Nickname configuration option, uses the local hostname as the Nickname value, which allows remote attackers to obtain potentially sensitive information by reading this value.

Record
CVE-2011-4897
Updated
2026-11-02
EUVDEUVD-2011-4814No score

Tor before 0.2.2.25-alpha, when configured as a relay without the Nickname configuration option, uses the local hostname as the Nickname value, which allows remote attackers to obtain potentially sensitive information by reading this value.

Record
EUVD-2011-4814
Updated
2026-11-03
GitHub AdvisoriesGHSA-7h3x-gchg-chhgNo score

Tor before 0.2.2.25-alpha, when configured as a relay without the Nickname configuration option,...

Tor before 0.2.2.25-alpha, when configured as a relay without the Nickname configuration option, uses the local hostname as the Nickname value, which allows remote attackers to obtain potentially sensitive information by reading this value.

Record
GHSA-7h3x-gchg-chhg
Weakness
CWE-200
Updated
2026-11-02
OSVNo score

Tor before 0.2.2.25-alpha, when configured as a relay without the Nickname configuration option, uses the local hostname as the Nickname value, which allows remote attackers to obtain potentially sensitive information by reading this value.

Record
CVE-2011-4897
Updated
2026-11-02
OSVDEBIAN-CVE-2011-4897No score

Tor before 0.2.2.25-alpha, when configured as a relay without the Nickname configuration option, uses the local hostname as the Nickname value, which allows remote attackers to obtain potentially sensitive information by reading this value.

Record
DEBIAN-CVE-2011-4897
Updated
2026-11-02
OSVopenSUSE-SU-2024:10423-1No 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

History

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

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

References

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