CVE-2010-0384: Tor 0.2.2.x before 0.2.2.7-alpha, when functioning as a directory mirror, does not prevent logging of the clie

Routine

LOW 2.1DOWNGRADE

CVE-2010-0384 is a low-severity flaw (CVSS 2.1) affecting tor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tor 0.2.2.x before 0.2.2.7-alpha, when functioning as a directory mirror, does not prevent logging of the client IP address upon detection of erroneous client behavior, which might make it easier for local users to discover the identities of clients in opportunistic circumstances by reading log files.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	2.1 (Low)
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-200
Published	2010-01-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: tor

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2010-01-25 19:30 UTCPublished CVE record published
2026-06-16 23:16 UTCUpdated Record last modified

tor tor DOWNGRADE

Affected: 0.2.2.1 · 0.2.2.1 alpha · 0.2.2.2 · 0.2.2.2 alpha · 0.2.2.3 · 0.2.2.3 alpha · 0.2.2.4 · 0.2.2.4 alpha

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.2.2.1

1. Check installed version

apt-cache policy tor || rpm -q tor || tor --version

2. No fixed release: DOWNGRADE to a release before 0.2.2.1 (Debian / Ubuntu)

apt-cache madison tor sudo apt install tor=<VERSION_BEFORE_0.2.2.1> sudo apt-mark hold tor

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list tor sudo dnf downgrade tor-<VERSION_BEFORE_0.2.2.1> sudo dnf versionlock add tor

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2010-0384?

tor: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2010-0384 being exploited?

CVE-2010-0384 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2010-0384 affect?

CVE-2010-0384 affects tor. Severity is low (CVSS 2.1). Tor 0.2.2.x before 0.2.2.7-alpha, when functioning as a directory mirror, does not prevent logging of the client IP address upon detection of erroneous client behavior, which might make it easier for local users to discover the identities o

How urgent is CVE-2010-0384?

Priority 14/100. No elevated risk signals yet.

Related CVEs

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CVE-2026-44597 LOW 3.7 UPGRADE Tor before 0.4.9.7 has an out-of-bounds read when an END, a TRUNCATE, or a TRUNCATED cell lacks a reason in it
CVE-2026-44600 LOW 3.7 UPGRADE Tor before 0.4.9.7 mishandles accounting of the conflux out-of-order queue during the clearing of a queue, aka
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References

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