Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0 through 5.2.6 allows context-dependent attackers to execute arbitrary code via a crafted string containing an HTML entity, which is not properly handled during Unicode conversion, related to the (1) mb_convert_encoding, (2) mb_check_encoding, (3) mb_convert_variables, and (4) mb_parse_str functions.
2008-12-23T18:30:03.313
2025-04-09T00:30:58.490
Deferred
CVSSv2: 10.0 (HIGH)
AV:N/AC:L/Au:N/C:C/I:C/A:C
10.0
10.0
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | php | php | 4.3.0 | Yes |
| Application | php | php | 4.3.1 | Yes |
| Application | php | php | 4.3.2 | Yes |
| Application | php | php | 4.3.3 | Yes |
| Application | php | php | 4.3.4 | Yes |
| Application | php | php | 4.3.5 | Yes |
| Application | php | php | 4.3.6 | Yes |
| Application | php | php | 4.3.7 | Yes |
| Application | php | php | 4.3.8 | Yes |
| Application | php | php | 4.3.9 | Yes |
| Application | php | php | 4.3.10 | Yes |
| Application | php | php | 4.3.11 | Yes |
| Application | php | php | 4.4.0 | Yes |
| Application | php | php | 4.4.1 | Yes |
| Application | php | php | 4.4.2 | Yes |
| Application | php | php | 4.4.3 | Yes |
| Application | php | php | 4.4.4 | Yes |
| Application | php | php | 4.4.5 | Yes |
| Application | php | php | 4.4.6 | Yes |
| Application | php | php | 4.4.7 | Yes |
| Application | php | php | 4.4.8 | Yes |
| Application | php | php | 4.4.9 | Yes |
| Application | php | php | 5.0.0 | Yes |
| Application | php | php | 5.0.0 | Yes |
| Application | php | php | 5.0.0 | Yes |
| Application | php | php | 5.0.0 | Yes |
| Application | php | php | 5.0.0 | Yes |
| Application | php | php | 5.0.0 | Yes |
| Application | php | php | 5.0.0 | Yes |
| Application | php | php | 5.0.0 | Yes |
| Application | php | php | 5.0.1 | Yes |
| Application | php | php | 5.0.2 | Yes |
| Application | php | php | 5.0.3 | Yes |
| Application | php | php | 5.0.4 | Yes |
| Application | php | php | 5.0.5 | Yes |
| Application | php | php | 5.1.0 | Yes |
| Application | php | php | 5.1.1 | Yes |
| Application | php | php | 5.1.2 | Yes |
| Application | php | php | 5.1.3 | Yes |
| Application | php | php | 5.1.4 | Yes |
| Application | php | php | 5.1.5 | Yes |
| Application | php | php | 5.1.6 | Yes |
| 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 |