The default session serializer in PHP 5.2 through 5.2.13 and 5.3 through 5.3.2 does not properly handle the PS_UNDEF_MARKER marker, which allows context-dependent attackers to modify arbitrary session variables via a crafted session variable name.
2010-08-20T20:00:03.373
2025-04-11T00:51:21.963
Deferred
CVSSv2: 5.0 (MEDIUM)
AV:N/AC:L/Au:N/C:N/I:P/A:N
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | php | php | 5.2.0 | Yes |
| Application | php | php | 5.2.1 | Yes |
| Application | php | php | 5.2.2 | Yes |
| Application | php | php | 5.2.3 | Yes |
| Application | php | php | 5.2.4 | Yes |
| Application | php | php | 5.2.5 | Yes |
| Application | php | php | 5.2.6 | Yes |
| Application | php | php | 5.2.7 | Yes |
| Application | php | php | 5.2.8 | Yes |
| Application | php | php | 5.2.9 | Yes |
| Application | php | php | 5.2.10 | Yes |
| Application | php | php | 5.2.11 | Yes |
| Application | php | php | 5.2.12 | Yes |
| Application | php | php | 5.2.13 | Yes |
| Application | php | php | 5.3.0 | Yes |
| Application | php | php | 5.3.1 | Yes |
| Application | php | php | 5.3.2 | Yes |