MEDIUM
Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of service (daemon crash) via vectors related to failed DNS requests
Published Aug 26, 2012
5.0
MEDIUMCVSS 2.0
EPSS 2.77%
Description
Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of service (daemon crash) via vectors related to failed DNS requests.
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:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.77% 0.02775
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02775
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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.77% (0.02775) | 85.86th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.77% (0.02775) | 84.43th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.46% (0.01461) | 79.52th | v4 (v2025.03.14) |
| Dec 12, 2024 | 3.76% (0.03761) | 92.17th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.76% (0.03761) | 90.41th | 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.fedoraproject.org/pipermail/package-announce/2012-September/088006.html vendor-advisoryx_refsource_FEDORA
- 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://security.gentoo.org/glsa/glsa-201301-03.xml vendor-advisoryx_refsource_GENTOO
- https://bugzilla.redhat.com/show_bug.cgi?id=849949 x_refsource_CONFIRM
- https://gitweb.torproject.org/tor.git/commit/62637fa22405278758febb1743da9af562524d4c 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/6480 x_refsource_CONFIRMPatch
| Link | Providers | Tags |
|---|---|---|
| http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088006.html | vendor-advisoryx_refsource_FEDORA | |
| 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://security.gentoo.org/glsa/glsa-201301-03.xml | vendor-advisoryx_refsource_GENTOO | |
| https://bugzilla.redhat.com/show_bug.cgi?id=849949 | x_refsource_CONFIRM | |
| https://gitweb.torproject.org/tor.git/commit/62637fa22405278758febb1743da9af562524d4c | 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/6480 | x_refsource_CONFIRMPatch |
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-2012-3517
CISA Vulnrichment
Updated n/a