Libtpms is a library that targets the integration of TPM functionality into hypervisors, primarily into Qemu. Libtpms, which is derived from the TPM 2.0 reference implementation code published by the Trusted Computing Group, is prone to a potential out of bounds (OOB) read vulnerability. The vulnerability occurs in the ‘CryptHmacSign’ function with an inconsistent pairing of the signKey and signScheme parameters, where the signKey is ALG_KEYEDHASH key and inScheme is an ECC or RSA scheme. The reported vulnerability is in the ‘CryptHmacSign’ function, which is defined in the Part 4: Supporting Routines – Code document, section 7.151 - /tpm/src/crypt/CryptUtil.c . This vulnerability can be triggered from user-mode applications by sending malicious commands to a TPM 2.0/vTPM (swtpm) whose firmware is based on an affected TCG reference implementation. The effect on libtpms is that it will cause an abort due to the detection of the out-of-bounds access, thus for example making a vTPM (swtpm) unavailable to a VM. This vulnerability is fixed in 0.7.12, 0.8.10, 0.9.7, and 0.10.1.
The product reads data past the end, or before the beginning, of the intended buffer.
Name | Vendor | Start Version | End Version |
---|---|---|---|
Red Hat Enterprise Linux 8 | RedHat | virt-devel:rhel-8100020250722092921.489197e6 | * |
Red Hat Enterprise Linux 8 | RedHat | virt:rhel-8100020250722092921.489197e6 | * |
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | RedHat | virt:rhel-8060020250716064909.ad008a3a | * |
Red Hat Enterprise Linux 8.6 Telecommunications Update Service | RedHat | virt:rhel-8060020250716064909.ad008a3a | * |
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | RedHat | virt:rhel-8060020250716064909.ad008a3a | * |
Red Hat Enterprise Linux 8.8 Telecommunications Update Service | RedHat | virt:rhel-8080020250715121528.63b34585 | * |
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | RedHat | virt:rhel-8080020250715121528.63b34585 | * |
Red Hat Enterprise Linux 9 | RedHat | libtpms-0:0.9.1-5.20211126git1ff6fe1f43.el9_6 | * |
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | RedHat | libtpms-0:0.9.1-5.20211126git1ff6fe1f43.el9_2 | * |
Red Hat Enterprise Linux 9.4 Extended Update Support | RedHat | libtpms-0:0.9.1-5.20211126git1ff6fe1f43.el9_4 | * |
Libtpms | Ubuntu | devel | * |
Libtpms | Ubuntu | jammy | * |
Libtpms | Ubuntu | noble | * |
Libtpms | Ubuntu | oracular | * |
Libtpms | Ubuntu | plucky | * |
Libtpms | Ubuntu | upstream | * |