A flaw was found in expat. Passing malformed 2- and 3-byte UTF-8 sequences (for example, from start tag names) to the XML processing application on top of expat can lead to arbitrary code execution. This issue is dependent on how invalid UTF-8 is handled inside the XML processor.
| Platform | Package | Release Date | Advisory |
|---|---|---|---|
| Amazon Linux 1 | expat | 2022-03-10 | ALAS-2022-1573 |
| Amazon Linux 2 - Core | expat | 2022-03-10 | ALAS2-2022-1764 |
| Amazon Linux 2023 | expat | 2023-03-22 | ALAS2023-2023-058 |
| Amazon Linux 2 - Core | thunderbird | 2022-04-27 | ALAS2-2022-1779 |
| Amazon Linux 1 | xmlrpc-c | 2022-05-24 | ALAS-2022-1585 |
| Amazon Linux 2 - Core | xmlrpc-c | 2022-05-24 | ALAS2-2022-1795 |
| Amazon Linux 2023 | xmlrpc-c | 2023-03-22 | ALAS2023-2023-068 |
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 9.8 | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | CVSSv2 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| NVD | CVSSv3 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
