CVE Vulnerabilities

CVE-2010-5074

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Published: Dec 07, 2011 | Modified: Apr 11, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N
RedHat/V2
RedHat/V3
Ubuntu
LOW

The layout engine in Mozilla Firefox before 4.0, Thunderbird before 3.3, and SeaMonkey before 2.1 executes different code for visited and unvisited links during the processing of Cascading Style Sheets (CSS) token sequences, which makes it easier for remote attackers to obtain sensitive information about visited web pages via a timing attack.

Weakness

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected Software

Name Vendor Start Version End Version
Firefox Mozilla * 3.6.24 (including)
Firefox Mozilla 3.0 (including) 3.0 (including)
Firefox Mozilla 3.0.1 (including) 3.0.1 (including)
Firefox Mozilla 3.0.2 (including) 3.0.2 (including)
Firefox Mozilla 3.0.3 (including) 3.0.3 (including)
Firefox Mozilla 3.0.4 (including) 3.0.4 (including)
Firefox Mozilla 3.0.5 (including) 3.0.5 (including)
Firefox Mozilla 3.0.6 (including) 3.0.6 (including)
Firefox Mozilla 3.0.7 (including) 3.0.7 (including)
Firefox Mozilla 3.0.8 (including) 3.0.8 (including)
Firefox Mozilla 3.0.9 (including) 3.0.9 (including)
Firefox Mozilla 3.0.10 (including) 3.0.10 (including)
Firefox Mozilla 3.0.11 (including) 3.0.11 (including)
Firefox Mozilla 3.0.12 (including) 3.0.12 (including)
Firefox Mozilla 3.0.13 (including) 3.0.13 (including)
Firefox Mozilla 3.0.14 (including) 3.0.14 (including)
Firefox Mozilla 3.0.15 (including) 3.0.15 (including)
Firefox Mozilla 3.0.16 (including) 3.0.16 (including)
Firefox Mozilla 3.0.17 (including) 3.0.17 (including)
Firefox Mozilla 3.5 (including) 3.5 (including)
Firefox Mozilla 3.5.1 (including) 3.5.1 (including)
Firefox Mozilla 3.5.2 (including) 3.5.2 (including)
Firefox Mozilla 3.5.3 (including) 3.5.3 (including)
Firefox Mozilla 3.5.4 (including) 3.5.4 (including)
Firefox Mozilla 3.5.5 (including) 3.5.5 (including)
Firefox Mozilla 3.5.6 (including) 3.5.6 (including)
Firefox Mozilla 3.5.7 (including) 3.5.7 (including)
Firefox Mozilla 3.5.8 (including) 3.5.8 (including)
Firefox Mozilla 3.5.9 (including) 3.5.9 (including)
Firefox Mozilla 3.5.10 (including) 3.5.10 (including)
Firefox Mozilla 3.5.11 (including) 3.5.11 (including)
Firefox Mozilla 3.5.12 (including) 3.5.12 (including)
Firefox Mozilla 3.5.13 (including) 3.5.13 (including)
Firefox Mozilla 3.5.14 (including) 3.5.14 (including)
Firefox Mozilla 3.5.15 (including) 3.5.15 (including)
Firefox Mozilla 3.6 (including) 3.6 (including)
Firefox Mozilla 3.6.1 (including) 3.6.1 (including)
Firefox Mozilla 3.6.2 (including) 3.6.2 (including)
Firefox Mozilla 3.6.3 (including) 3.6.3 (including)
Firefox Mozilla 3.6.4 (including) 3.6.4 (including)
Firefox Mozilla 3.6.6 (including) 3.6.6 (including)
Firefox Mozilla 3.6.7 (including) 3.6.7 (including)
Firefox Mozilla 3.6.8 (including) 3.6.8 (including)
Firefox Mozilla 3.6.9 (including) 3.6.9 (including)
Firefox Mozilla 3.6.10 (including) 3.6.10 (including)
Firefox Mozilla 3.6.11 (including) 3.6.11 (including)
Firefox Mozilla 3.6.12 (including) 3.6.12 (including)
Firefox Mozilla 3.6.13 (including) 3.6.13 (including)
Firefox Mozilla 3.6.14 (including) 3.6.14 (including)
Firefox Mozilla 3.6.15 (including) 3.6.15 (including)
Firefox Mozilla 3.6.16 (including) 3.6.16 (including)
Firefox Mozilla 3.6.17 (including) 3.6.17 (including)
Firefox Mozilla 3.6.18 (including) 3.6.18 (including)
Firefox Mozilla 3.6.19 (including) 3.6.19 (including)
Firefox Mozilla 3.6.20 (including) 3.6.20 (including)
Firefox Mozilla 3.6.21 (including) 3.6.21 (including)
Firefox Mozilla 3.6.22 (including) 3.6.22 (including)
Firefox Mozilla 3.6.23 (including) 3.6.23 (including)
Firefox Ubuntu hardy *
Firefox Ubuntu maverick *
Seamonkey Ubuntu hardy *
Seamonkey Ubuntu lucid *
Seamonkey Ubuntu maverick *
Seamonkey Ubuntu natty *
Seamonkey Ubuntu oneiric *
Thunderbird Ubuntu hardy *
Thunderbird Ubuntu maverick *
Xulrunner-1.9.2 Ubuntu hardy *
Xulrunner-1.9.2 Ubuntu lucid *
Xulrunner-1.9.2 Ubuntu maverick *
Xulrunner-1.9.2 Ubuntu natty *
Xulrunner-2.0 Ubuntu natty *

Extended Description

A race condition occurs within concurrent environments, and it is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc. A race condition violates these properties, which are closely related:

A race condition exists when an “interfering code sequence” can still access the shared resource, violating exclusivity. The interfering code sequence could be “trusted” or “untrusted.” A trusted interfering code sequence occurs within the product; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable product.

Potential Mitigations

  • Minimize the usage of shared resources in order to remove as much complexity as possible from the control flow and to reduce the likelihood of unexpected conditions occurring.
  • Additionally, this will minimize the amount of synchronization necessary and may even help to reduce the likelihood of a denial of service where an attacker may be able to repeatedly trigger a critical section (CWE-400).

References