CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
9.5 | $0-$5k | 0.00 |
A vulnerability was found in Tor up to 0.2.2.35 (Network Encryption Software). It has been rated as critical. Affected by this issue is the function buf_pullup
of the file or/buffers.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:
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.
The weakness was published 12/16/2011 with Debian (Website). The advisory is available at debian.org. This vulnerability is handled as CVE-2011-2778 since 07/19/2011. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.
The vulnerability scanner Nessus provides a plugin with the ID 57503 (Debian DSA-2363-1 : tor - buffer overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks.
Upgrading to version 0.2.2.35 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the databases at X-Force (71860) and Tenable (57503).
Product
Type
Name
Version
- 0.2.2.0
- 0.2.2.1
- 0.2.2.2
- 0.2.2.3
- 0.2.2.4
- 0.2.2.5
- 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
- 0.2.2.21
- 0.2.2.22
- 0.2.2.23
- 0.2.2.24
- 0.2.2.25
- 0.2.2.26
- 0.2.2.27
- 0.2.2.28
- 0.2.2.29
- 0.2.2.30
- 0.2.2.31
- 0.2.2.32
- 0.2.2.33
- 0.2.2.34
- 0.2.2.35
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 10.0VulDB Meta Temp Score: 9.5
VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Memory corruptionCWE: CWE-119
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Nessus ID: 57503
Nessus Name: Debian DSA-2363-1 : tor - buffer overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍
OpenVAS ID: 70575
OpenVAS Name: Debian Security Advisory DSA 2363-1 (tor)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: Tor 0.2.2.35
Timeline
07/19/2011 🔍12/16/2011 🔍
12/16/2011 🔍
12/16/2011 🔍
12/19/2011 🔍
12/22/2011 🔍
12/22/2011 🔍
01/12/2012 🔍
01/21/2012 🔍
03/13/2012 🔍
03/20/2021 🔍
Sources
Advisory: debian.orgOrganization: Debian
Status: Not defined
Confirmation: 🔍
CVE: CVE-2011-2778 (🔍)
OVAL: 🔍
X-Force: 71860
Vulnerability Center: 34625 - Tor Before 0.2.2.35 SOCKS Multiple Heap-Based Buffer Overflows Allow Remote DoS \\ Code Execution, High
SecurityFocus: 51097 - Tor SOCKS Connection Heap Based Buffer Overflow Vulnerability
Secunia: 47259 - Debian update for tor, Highly Critical
OSVDB: 77947
Entry
Created: 01/21/2012 01:00Updated: 03/20/2021 09:28
Changes: 01/21/2012 01:00 (70), 04/10/2017 11:43 (10), 03/20/2021 09:28 (2)
Complete: 🔍
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