@@ -93,71 +93,76 @@ of the downstream projects included in this process:
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Issue Severity
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--------------
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+
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In order to determine the severity of a security issue we take into account
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the complexity of any potential attack, the impact of the vulnerability and
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also how many projects it is likely to affect. This score out of 15 is then
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converted into a level of: Low, Medium, High, Critical, or Exceptional.
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- **Attack Complexity **
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+ Attack Complexity
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+ ~~~~~~~~~~~~~~~~~
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*Score of between 1 and 5 depending on how complex it is to exploit the
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vulnerability *
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* 4 - 5 Basic: attacker must follow a set of simple steps
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- * 2 - 3 Complex: attacker must follow non-intuitive steps with a high level
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+ * 2 - 3 Complex: attacker must follow non-intuitive steps with a high level
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of dependencies
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- * 1 - 2 High: A successful attack depends on conditions beyond the attacker's
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- control. That is, a successful attack cannot be accomplished at will, but
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- requires the attacker to invest in some measurable amount of effort in
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- preparation or execution against the vulnerable component before a successful
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+ * 1 - 2 High: A successful attack depends on conditions beyond the attacker's
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+ control. That is, a successful attack cannot be accomplished at will, but
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+ requires the attacker to invest in some measurable amount of effort in
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+ preparation or execution against the vulnerable component before a successful
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attack can be expected.
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- **Impact **
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+ Impact
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+ ~~~~~~
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*Scores from the following areas are added together to produce a score. The
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score for Impact is capped at 6. Each area is scored between 0 and 4. *
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- * Integrity: Does this vulnerability cause non-public data to be accessible?
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+ * Integrity: Does this vulnerability cause non-public data to be accessible?
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If so, does the attacker have control over the data disclosed? (0-4)
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- * Disclosure: Can this exploit allow system data (or data handled by the
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- system) to be compromised? If so, does the attacker have control over
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+ * Disclosure: Can this exploit allow system data (or data handled by the
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+ system) to be compromised? If so, does the attacker have control over
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modification? (0-4)
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* Code Execution: Does the vulnerability allow arbitrary code to be executed
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on an end-users system, or the server that it runs on? (0-4)
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- * Availability: Is the availability of a service or application affected? Is
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- it reduced availability or total loss of availability of a service /
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- application? Availability includes networked services (e.g., databases) or
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- resources such as consumption of network bandwidth, processor cycles, or
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+ * Availability: Is the availability of a service or application affected? Is
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+ it reduced availability or total loss of availability of a service /
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+ application? Availability includes networked services (e.g., databases) or
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+ resources such as consumption of network bandwidth, processor cycles, or
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disk space. (0-4)
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- **Affected Projects **
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+ Affected Projects
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+ ~~~~~~~~~~~~~~~~~
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*Scores from the following areas are added together to produce a score. The
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score for Affected Projects is capped at 4. *
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* Will it affect some or all using a component? (1-2)
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- * Is the usage of the component that would cause such a thing already
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+ * Is the usage of the component that would cause such a thing already
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considered bad practice? (0-1)
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- * How common/popular is the component (e.g. Console vs HttpFoundation vs
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+ * How common/popular is the component (e.g. Console vs HttpFoundation vs
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Lock)? (0-2)
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* Are a number of well-known open source projects using Symfony affected
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that requires coordinated releases? (0-1)
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- **Score Totals **
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+ Score Totals
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+ ~~~~~~~~~~~~
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* Attack Complexity: 1 - 4
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* Impact: 1 - 6
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* Affected Projects: 1 - 4
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- **Severity levels **
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+ Severity levels
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+ ~~~~~~~~~~~~~~~
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* Low: 1 - 5
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* Medium: 6 - 10
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* High: 11 - 12
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* Critical: 13 - 14
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* Exceptional: 15
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-
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Security Advisories
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-------------------
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