HIGH
Multiple heap-based buffer overflows in Tor before 0.2.2.35 allow remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code by (1) establishing a SOCKS connection to SocksPort or (2) leveraging a SOCKS proxy configuration
Published Dec 23, 2011
7.6
HIGHCVSS 2.0
EPSS 3.77%
Description
Multiple heap-based buffer overflows in Tor before 0.2.2.35 allow remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code by (1) establishing a SOCKS connection to SocksPort or (2) leveraging a SOCKS proxy configuration.
Affected products
No data.
OR
- ≤ 0.2.2.34
- 0.0.2
- 0.0.3
- 0.0.4
- 0.0.5
- 0.0.6
- 0.0.6.1
- 0.0.6.2
- 0.0.7
- 0.0.7.1
- 0.0.7.2
- 0.0.7.3
- 0.0.8
- 0.0.8.1
- 0.0.9
- 0.0.9.1
- 0.0.9.2
- 0.0.9.3
- 0.0.9.4
- 0.0.9.5
- 0.0.9.6
- 0.0.9.7
- 0.0.9.8
- 0.0.9.9
- 0.0.9.10
- 0.1.0.1
- 0.1.0.2
- 0.1.0.3
- 0.1.0.4
- 0.1.0.5
- 0.1.0.6
- 0.1.0.7
- 0.1.0.8
- 0.1.0.9
- 0.1.0.10
- 0.1.0.11
- 0.1.0.12
- 0.1.0.13
- 0.1.0.14
- 0.1.0.15
- 0.1.0.16
- 0.1.0.17
- 0.1.0.18
- 0.1.0.19
- 0.1.1
- 0.1.1.1
- 0.1.1.1
- 0.1.1.2
- 0.1.1.2
- 0.1.1.3
- 0.1.1.3
- 0.1.1.4
- 0.1.1.4
- 0.1.1.5
- 0.1.1.5
- 0.1.1.6
- 0.1.1.6
- 0.1.1.7
- 0.1.1.7
- 0.1.1.8
- 0.1.1.8
- 0.1.1.9
- 0.1.1.9
- 0.1.1.10
- 0.1.1.10
- 0.1.1.11
- 0.1.1.12
- 0.1.1.13
- 0.1.1.14
- 0.1.1.15
- 0.1.1.16
- 0.1.1.17
- 0.1.1.18
- 0.1.1.19
- 0.1.1.20
- 0.1.1.21
- 0.1.1.22
- 0.1.1.23
- 0.1.1.25
- 0.1.1.26
- 0.1.2.1
- 0.1.2.1
- 0.1.2.2
- 0.1.2.3
- 0.1.2.4
- 0.1.2.5
- 0.1.2.5
- 0.1.2.6
- 0.1.2.7
- 0.1.2.8
- 0.1.2.9
- 0.1.2.10
- 0.1.2.11
- 0.1.2.12
- 0.1.2.13
- 0.1.2.14
- 0.1.2.15
- 0.1.2.16
- 0.1.2.17
- 0.1.2.18
- 0.1.2.19
- 0.1.2.30
- 0.1.2.31
- 0.2.0.1
- 0.2.0.2
- 0.2.0.3
- 0.2.0.4
- 0.2.0.5
- 0.2.0.6
- 0.2.0.7
- 0.2.0.8
- 0.2.0.9
- 0.2.0.10
- 0.2.0.11
- 0.2.0.12
- 0.2.0.13
- 0.2.0.14
- 0.2.0.15
- 0.2.0.16
- 0.2.0.17
- 0.2.0.18
- 0.2.0.19
- 0.2.0.20
- 0.2.0.21
- 0.2.0.22
- 0.2.0.23
- 0.2.0.24
- 0.2.0.25
- 0.2.0.26
- 0.2.0.27
- 0.2.0.28
- 0.2.0.29
- 0.2.0.29
- 0.2.0.30
- 0.2.0.30
- 0.2.0.31
- 0.2.0.31
- 0.2.0.32
- 0.2.0.33
- 0.2.0.34
- 0.2.0.35
- 0.2.1.1
- 0.2.1.1.1
- 0.2.1.1.2
- 0.2.1.1.3
- 0.2.1.1.4
- 0.2.1.1.5
- 0.2.1.1.6
- 0.2.1.1.7
- 0.2.1.1.8
- 0.2.1.1.9
- 0.2.1.1.10
- 0.2.1.1.11
- 0.2.1.1.12
- 0.2.1.1.12
- 0.2.1.1.13
- 0.2.1.1.14
- 0.2.1.1.15
- 0.2.1.1.16
- 0.2.1.1.17
- 0.2.1.1.18
- 0.2.1.1.19
- 0.2.1.1.20
- 0.2.1.1.21
- 0.2.1.1.22
- 0.2.1.1.23
- 0.2.1.1.24
- 0.2.1.1.25
- 0.2.1.1.26
- 0.2.1.1.27
- 0.2.1.1.28
- 0.2.1.2
- 0.2.1.3
- 0.2.1.4
- 0.2.1.5
- 0.2.1.6
- 0.2.1.7
- 0.2.1.8
- 0.2.1.9
- 0.2.1.10
- 0.2.1.11
- 0.2.1.12
- 0.2.1.12
- 0.2.1.13
- 0.2.1.14
- 0.2.1.15
- 0.2.1.16
- 0.2.1.17
- 0.2.1.18
- 0.2.1.19
- 0.2.1.20
- 0.2.1.21
- 0.2.1.22
- 0.2.1.23
- 0.2.1.24
- 0.2.1.25
- 0.2.1.26
- 0.2.1.27
- 0.2.1.28
- 0.2.1.29
- 0.2.2.1
- 0.2.2.1
- 0.2.2.2
- 0.2.2.2
- 0.2.2.3
- 0.2.2.3
- 0.2.2.4
- 0.2.2.4
- 0.2.2.5
- 0.2.2.5
- 0.2.2.6
- 0.2.2.6
- 0.2.2.7
- 0.2.2.8
- 0.2.2.9
- 0.2.2.10
- 0.2.2.11
- 0.2.2.12
- 0.2.2.13
- 0.2.2.14
- 0.2.2.15
- 0.2.2.16
- 0.2.2.17
- 0.2.2.18
- 0.2.2.19
- 0.2.2.20
- 0.2.2.29
- 0.2.2.29
- 0.2.2.32
- 0.2.2.33
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
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.
7.6 HIGH NVD
AV:N/AC:H/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity High
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.77% 0.03768
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03768
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.77% (0.03768) | 89.58th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.82% (0.03823) | 88.67th | v5 (v2026.06.15) |
| Jan 27, 2026 | 3.51% (0.03506) | 87.29th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.30% (0.05303) | 89.06th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.84% (0.06845) | 85.23th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.30% (0.05303) | 89.32th | v4 (v2025.03.14) |
| Dec 17, 2024 | 0.59% (0.00590) | 78.11th | v3 (v2023.03.01) |
| May 22, 2024 | 1.62% (0.01624) | 87.52th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.62% (0.01624) | 85.49th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.32% (0.04315) | 87.65th | v2 (v2022.01.01) |
| Jun 7, 2022 | 4.32% (0.04315) | 86.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.80% (0.04804) | 88.19th | v2 (v2022.01.01) |
| Mar 7, 2022 | 4.80% (0.04804) | 74.94th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.38% (0.05375) | 76.24th | v2 (v2022.01.01) |
Weaknesses (1)
References (2)
- http://www.debian.org/security/2011/dsa-2363 vendor-advisoryx_refsource_DEBIAN
- https://blog.torproject.org/blog/tor-02235-released-security-patches x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2011/dsa-2363 | vendor-advisoryx_refsource_DEBIAN | |
| https://blog.torproject.org/blog/tor-02235-released-security-patches | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 23, 2011
Updated Aug 6, 2024
Reserved Jul 19, 2011
Link CVE-2011-2778
CISA Vulnrichment
Updated n/a