MEDIUM
routerlist.c in Tor before 0.2.2.38 uses a different amount of time for relay-list iteration depending on which relay is chosen, which might allow remote attackers to obtain sensitive information about relay selection via a timing side-channel attack
Published Aug 26, 2012
5.0
MEDIUMCVSS 2.0
EPSS 2.42%
Description
routerlist.c in Tor before 0.2.2.38 uses a different amount of time for relay-list iteration depending on which relay is chosen, which might allow remote attackers to obtain sensitive information about relay selection via a timing side-channel attack.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.42% 0.02422
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02422
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.42% (0.02422) | 83.59th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.42% (0.02422) | 81.98th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.64% (0.00635) | 68.65th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.64% (0.00640) | 79.91th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.64% (0.00640) | 78.55th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.64% (0.00640) | 76.01th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
Weaknesses (1)
References (8)
- http://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html vendor-advisoryx_refsource_SUSE
- http://openwall.com/lists/oss-security/2012/08/21/6 mailing-listx_refsource_MLIST
- http://secunia.com/advisories/50583 third-party-advisoryx_refsource_SECUNIA
- http://security.gentoo.org/glsa/glsa-201301-03.xml vendor-advisoryx_refsource_GENTOO
- https://gitweb.torproject.org/tor.git/commit/308f6dad20675c42b29862f4269ad1fbfb00dc9a x_refsource_CONFIRM
- https://gitweb.torproject.org/tor.git/commit/d48cebc5e498b0ae673635f40fc57cdddab45d5b x_refsource_CONFIRM
- https://lists.torproject.org/pipermail/tor-announce/2012-August/000086.html mailing-listx_refsource_MLIST
- https://trac.torproject.org/projects/tor/ticket/6537 x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html | vendor-advisoryx_refsource_SUSE | |
| http://openwall.com/lists/oss-security/2012/08/21/6 | mailing-listx_refsource_MLIST | |
| http://secunia.com/advisories/50583 | third-party-advisoryx_refsource_SECUNIA | |
| http://security.gentoo.org/glsa/glsa-201301-03.xml | vendor-advisoryx_refsource_GENTOO | |
| https://gitweb.torproject.org/tor.git/commit/308f6dad20675c42b29862f4269ad1fbfb00dc9a | x_refsource_CONFIRM | |
| https://gitweb.torproject.org/tor.git/commit/d48cebc5e498b0ae673635f40fc57cdddab45d5b | x_refsource_CONFIRM | |
| https://lists.torproject.org/pipermail/tor-announce/2012-August/000086.html | mailing-listx_refsource_MLIST | |
| https://trac.torproject.org/projects/tor/ticket/6537 | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Aug 26, 2012
Updated Aug 6, 2024
Reserved Jun 14, 2012
Link CVE-2012-3519
CISA Vulnrichment
Updated n/a