MEDIUM
Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors
Published Jan 19, 2011
6.8
MEDIUMCVSS 2.0
EPSS 4.44%
Description
Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.
Affected products
No data.
OR
- ≤ 0.2.1.28
- 0.0.2
- 0.0.2_pre13
- 0.0.2_pre14
- 0.0.2_pre15
- 0.0.2_pre16
- 0.0.2_pre17
- 0.0.2_pre18
- 0.0.2_pre19
- 0.0.2_pre20
- 0.0.2_pre21
- 0.0.2_pre22
- 0.0.2_pre23
- 0.0.2_pre24
- 0.0.2_pre25
- 0.0.2_pre26
- 0.0.2_pre27
- 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
- 0.1.1
- 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
- 0.1.2.2
- 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
- 0.2.1.2
- 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
- 0.2.2.1
- 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
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.
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
4.44% 0.04444
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.04444
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 | 4.44% (0.04444) | 91.10th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.44% (0.04444) | 90.14th | v5 (v2026.06.15) |
| Mar 17, 2025 | 4.94% (0.04936) | 88.90th | v4 (v2025.03.14) |
| Dec 12, 2024 | 4.93% (0.04930) | 93.10th | v3 (v2023.03.01) |
| Sep 9, 2023 | 4.93% (0.04930) | 91.81th | v3 (v2023.03.01) |
| Jul 20, 2023 | 4.24% (0.04237) | 91.11th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.06% (0.04056) | 90.75th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.60% (0.06604) | 91.53th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.60% (0.06604) | 90.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.60% (0.06604) | 78.62th | v2 (v2022.01.01) |
Weaknesses (1)
References (11)
- http://archives.seul.org/or/announce/Jan-2011/msg00000.html mailing-listx_refsource_MLISTPatch
- http://blog.torproject.org/blog/tor-02129-released-security-patches x_refsource_CONFIRMPatchVendor Advisory
- http://secunia.com/advisories/42905 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/42907 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.debian.org/security/2011/dsa-2148 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/45832 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1024980 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2011/0131 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0132 vdb-entryx_refsource_VUPENVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64748 vdb-entryx_refsource_XF
- https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog x_refsource_CONFIRMPatch
| Link | Providers | Tags |
|---|---|---|
| http://archives.seul.org/or/announce/Jan-2011/msg00000.html | mailing-listx_refsource_MLISTPatch | |
| http://blog.torproject.org/blog/tor-02129-released-security-patches | x_refsource_CONFIRMPatchVendor Advisory | |
| http://secunia.com/advisories/42905 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/42907 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.debian.org/security/2011/dsa-2148 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/45832 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1024980 | vdb-entryx_refsource_SECTRACK | |
| http://www.vupen.com/english/advisories/2011/0131 | vdb-entryx_refsource_VUPENVendor Advisory | |
| http://www.vupen.com/english/advisories/2011/0132 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/64748 | vdb-entryx_refsource_XF | |
| https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog | x_refsource_CONFIRMPatch |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 19, 2011
Updated Aug 6, 2024
Reserved Jan 12, 2011
Link CVE-2011-0427
CISA Vulnrichment
Updated n/a