The QSharedMemory class in Qt 5.0.0, 4.8.x before 4.8.5, 4.7.x before 4.7.6, and other versions including 4.4.0 uses weak permissions (world-readable and world-writable) for shared memory segments, which allows local users to read sensitive information or modify critical program data, as demonstrated by reading a pixmap being sent to an X server.
2013-02-06T12:05:43.647
2025-04-11T00:51:21.963
Deferred
CVSSv2: 3.6 (LOW)
AV:L/AC:L/Au:N/C:P/I:P/A:N
3.9
4.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | qt | qt | 1.41 | Yes |
| Application | qt | qt | 1.42 | Yes |
| Application | qt | qt | 1.43 | Yes |
| Application | qt | qt | 1.44 | Yes |
| Application | qt | qt | 1.45 | Yes |
| Application | qt | qt | 2.0.0 | Yes |
| Application | qt | qt | 2.0.1 | Yes |
| Application | qt | qt | 2.0.2 | Yes |
| Application | qt | qt | 3.3.0 | Yes |
| Application | qt | qt | 3.3.1 | Yes |
| Application | qt | qt | 3.3.2 | Yes |
| Application | qt | qt | 3.3.3 | Yes |
| Application | qt | qt | 3.3.4 | Yes |
| Application | qt | qt | 3.3.5 | Yes |
| Application | qt | qt | 3.3.6 | Yes |
| Application | qt | qt | 4.0.0 | Yes |
| Application | qt | qt | 4.0.1 | Yes |
| Application | qt | qt | 4.1.0 | Yes |
| Application | qt | qt | 4.1.1 | Yes |
| Application | qt | qt | 4.1.2 | Yes |
| Application | qt | qt | 4.1.3 | Yes |
| Application | qt | qt | 4.1.4 | Yes |
| Application | qt | qt | 4.1.5 | Yes |
| Application | qt | qt | 4.2.0 | Yes |
| Application | qt | qt | 4.2.1 | Yes |
| Application | qt | qt | 4.2.3 | Yes |
| Application | qt | qt | 4.3.0 | Yes |
| Application | qt | qt | 4.3.1 | Yes |
| Application | qt | qt | 4.3.2 | Yes |
| Application | qt | qt | 4.3.3 | Yes |
| Application | qt | qt | 4.3.4 | Yes |
| Application | qt | qt | 4.3.5 | Yes |
| Application | qt | qt | 4.4.0 | Yes |
| Application | qt | qt | 4.4.1 | Yes |
| Application | qt | qt | 4.4.2 | Yes |
| Application | qt | qt | 4.4.3 | Yes |
| Application | qt | qt | 4.5.0 | Yes |
| Application | qt | qt | 4.5.1 | Yes |
| Application | qt | qt | 4.5.2 | Yes |
| Application | qt | qt | 4.5.3 | Yes |
| Application | qt | qt | 4.6.0 | Yes |
| Application | qt | qt | 4.6.1 | Yes |
| Application | qt | qt | 4.6.2 | Yes |
| Application | qt | qt | 4.6.3 | Yes |
| Application | qt | qt | 4.6.4 | Yes |
| Application | qt | qt | 4.6.5 | Yes |
| Application | qt | qt | 4.7.0 | Yes |
| Application | qt | qt | 4.7.1 | Yes |
| Application | qt | qt | 4.7.2 | Yes |
| Application | qt | qt | 4.7.3 | Yes |
| Application | qt | qt | 4.7.4 | Yes |
| Application | qt | qt | 4.7.5 | Yes |
| Application | qt | qt | 4.7.6 | Yes |
| Application | qt | qt | 4.8.0 | Yes |
| Application | qt | qt | 4.8.1 | Yes |
| Application | qt | qt | 4.8.2 | Yes |
| Application | qt | qt | 4.8.3 | Yes |
| Application | qt | qt | 4.8.4 | Yes |
| Application | qt | qt | 4.8.5 | Yes |
| Application | qt | qt | 5.0.0 | Yes |
| Application | qt | qt | 5.0.1 | Yes |