Description
The dechunk filter in PHP 5.3 through 5.3.2, when decoding an HTTP chunked encoding stream, allows context-dependent attackers to cause a denial of service (crash) and possibly trigger memory corruption via a negative chunk size, which bypasses a signed comparison, related to an integer overflow in the chunk size decoder.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- openSUSE / opensuse11.3 – 11.3
- openSUSE / opensuse11.1 – 11.1
- openSUSE / opensuse11.2 – 11.2
- php / PHP5.3.0 – 5.3.2
- SUSE / linux_enterprise10.0 – 10.0
- SUSE / linux_enterprise11.0 – 11.0
- SUSE / linux_enterprise11.0 – 11.0