CVE-2020-29363

An issue was discovered in p11-kit 0.23.6 through 0.23.21. A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value.

Provides a way to load and enumerate PKCS#11 modules. Provides a standard configuration setup for installing PKCS#11 modules in such a way that they're discoverable. Also solves problems with coordinating the use of PKCS#11 by different components or libraries living in the same process.\r\n\r\n Security Fix(es):\r\n\r\n An issue was discovered in p11-kit 0.21.1 through 0.23.21. Multiple integer overflows have been discovered in the array allocations in the p11-kit library and the p11-kit list command, where overflow checks are missing before calling realloc or calloc.(CVE-2020-29361)\r\n\r\n An issue was discovered in p11-kit 0.21.1 through 0.23.21. A heap-based buffer over-read has been discovered in the RPC protocol used by thep11-kit server/remote commands and the client library. When the remote entity supplies a byte array through a serialized PKCS#11 function call, the receiving entity may allow the reading of up to 4 bytes of memory past the heap allocation.(CVE-2020-29362)\r\n\r\n An issue was discovered in p11-kit 0.23.6 through 0.23.21. A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value.(CVE-2020-29363)\r\n\r\n

The p11-kit packages provide a mechanism to manage PKCS#11 modules. The p11-kit-trust subpackage includes a PKCS#11 trust module that provides certificate anchors and black lists based on configuration files.

The following packages have been upgraded to a later upstream version: p11-kit (0.23.22). (BZ#1887853)

Security Fix(es):

• p11-kit: integer overflow when allocating memory for arrays or attributes and object identifiers (CVE-2020-29361)

• p11-kit: out-of-bounds read in p11_rpc_buffer_get_byte_array function in rpc-message.c (CVE-2020-29362)

• p11-kit: out-of-bounds write in p11_rpc_buffer_get_byte_array_value function in rpc-message.c (CVE-2020-29363)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.4 Release Notes linked from the References section.

An issue was discovered in p11-kit 0.23.6 through 0.23.21. A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value.

The p11-kit packages provide a mechanism to manage PKCS#11 modules. The p11-kit-trust subpackage includes a PKCS#11 trust module that provides certificate anchors and black lists based on configuration files.

The following packages have been upgraded to a later upstream version: p11-kit (0.23.22). (BZ#1887853)

Security Fix(es):

• p11-kit: integer overflow when allocating memory for arrays or attributes and object identifiers (CVE-2020-29361)

• p11-kit: out-of-bounds read in p11_rpc_buffer_get_byte_array function in rpc-message.c (CVE-2020-29362)

• p11-kit: out-of-bounds write in p11_rpc_buffer_get_byte_array_value function in rpc-message.c (CVE-2020-29363)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

Multiple integer overflows have been discovered in the array allocations in the p11-kit library and the p11-kit list command, where overflow checks are missing before calling realloc or calloc (CVE-2020-29361).

A heap-based buffer over-read has been discovered in the RPC protocol used by the p11-kit server/remote commands and the client library. When the remote entity supplies a byte array through a serialized PKCS#11 function call, the receiving entity may allow the reading of up to 4 bytes of memory past the heap allocation (CVE-2020-29362).

A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value (CVE-2020-29363).

David Cook discovered that p11-kit incorrectly handled certain memory operations. An attacker could use this issue to cause p11-kit to crash, resulting in a denial of service, or possibly execute arbitrary code.