Описание
Mbed TLS before 3.6.4 allows a use-after-free in certain situations of applications that are developed in accordance with the documentation. The function mbedtls_x509_string_to_names() takes a head argument that is documented as an output argument. The documentation does not suggest that the function will free that pointer; however, the function does call mbedtls_asn1_free_named_data_list() on that argument, which performs a deep free(). As a result, application code that uses this function (relying only on documented behavior) is likely to still hold pointers to the memory blocks that were freed, resulting in a high risk of use-after-free or double-free. In particular, the two sample programs x509/cert_write and x509/cert_req are affected (use-after-free if the san string contains more than one DN).
| Релиз | Статус | Примечание |
|---|---|---|
| devel | not-affected | 3.6.5-0.1ubuntu2 |
| esm-apps-legacy/xenial | needed | |
| esm-apps/bionic | released | 2.8.0-1ubuntu0.1~esm1 |
| esm-apps/focal | released | 2.16.4-1ubuntu2+esm1 |
| esm-apps/jammy | released | 2.28.0-1ubuntu0.1~esm1 |
| esm-apps/noble | released | 2.28.8-1ubuntu0.1~esm1 |
| esm-apps/resolute | not-affected | 3.6.5-0.1ubuntu2 |
| esm-apps/xenial | ignored | end of ESM support, was needed |
| jammy | needed | |
| noble | needed |
Показывать по
EPSS
8.9 High
CVSS3
Связанные уязвимости
Mbed TLS before 3.6.4 allows a use-after-free in certain situations of applications that are developed in accordance with the documentation. The function mbedtls_x509_string_to_names() takes a head argument that is documented as an output argument. The documentation does not suggest that the function will free that pointer; however, the function does call mbedtls_asn1_free_named_data_list() on that argument, which performs a deep free(). As a result, application code that uses this function (relying only on documented behavior) is likely to still hold pointers to the memory blocks that were freed, resulting in a high risk of use-after-free or double-free. In particular, the two sample programs x509/cert_write and x509/cert_req are affected (use-after-free if the san string contains more than one DN).
Mbed TLS before 3.6.4 allows a use-after-free in certain situations of ...
Mbed TLS before 3.6.4 allows a use-after-free in certain situations of applications that are developed in accordance with the documentation. The function mbedtls_x509_string_to_names() takes a head argument that is documented as an output argument. The documentation does not suggest that the function will free that pointer; however, the function does call mbedtls_asn1_free_named_data_list() on that argument, which performs a deep free(). As a result, application code that uses this function (relying only on documented behavior) is likely to still hold pointers to the memory blocks that were freed, resulting in a high risk of use-after-free or double-free. In particular, the two sample programs x509/cert_write and x509/cert_req are affected (use-after-free if the san string contains more than one DN).
Уязвимость функции mbedtls_x509_string_to_names программного обеспечения Mbed TLS, позволяющая нарушителю выполнить произвольный код
EPSS
8.9 High
CVSS3