CVE-2012-3519
routerlist.c in Tor before 0.2.2.38 uses a different amount of time for relay-list iteration...
CVE-2012-3519 is a medium vulnerability (CVSS 5.0) in Tor, published August 26, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.42%, the 84th percentile. Fixed in tor 0.2.3.20-rc-1.
- Severity
- 5.0 MediumCVSS 2.0, NVD
- Exploit chance
- 2.42%EPSS, 84th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
0.2.3.20-rc-1tor +4 more
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.
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
torDebian:12 | before 0.2.3.20-rc-1 | 0.2.3.20-rc-1 |
torDebian:13 | before 0.2.3.20-rc-1 | 0.2.3.20-rc-1 |
torDebian:14 | before 0.2.3.20-rc-1 | 0.2.3.20-rc-1 |
torDebian:6.0 From an advisory covering 4 CVEs | before 0.2.2.39-1, 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 44 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+10.2.2.38-10.2.2.4-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 | 0.2.2.39-1 |
toropenSUSE: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 used
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.
- Record
CVE-2012-3519- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE ListNo score
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.
- Record
CVE-2012-3519- Updated
- 2026-11-02
EUVDEUVD-2012-3474No score
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.
- Record
EUVD-2012-3474- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gh38-mhw5-8qwcNo score
routerlist.c in Tor before 0.2.2.38 uses a different amount of time for relay-list iteration...
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.
- Record
GHSA-gh38-mhw5-8qwc- Weakness
- CWE-200
- Updated
- 2026-11-02
OSVNo score
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.
- Record
CVE-2012-3519- Updated
- 2026-11-02
OSVDEBIAN-CVE-2012-3519No score
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.
- Record
DEBIAN-CVE-2012-3519- 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
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
security.gentoo.org/glsa/glsa-201301-03.xml
gitweb.torproject.org/tor.git/commit/308f6dad20675c42b29862f4269ad1fbfb00dc9a
lists.torproject.org/pipermail/tor-announce/2012-August/000086.html
secunia.com/advisories/50583
openwall.com/lists/oss-security/2012/08/21/6
trac.torproject.org/projects/tor/ticket/6537
Show 27 moreShow less
lists.opensuse.org/opensuse-updates/2012-08/msg00048.html
nvd.nist.gov/vuln/detail/CVE-2012-3519
github.com/advisories/GHSA-gh38-mhw5-8qwc
security-tracker.debian.org/tracker/CVE-2012-3519
suse.com/security/cve/CVE-2011-0427