CVE-2025-49133

一、漏洞信息
 漏洞编号：[CVE-2025-49133](https://nvd.nist.gov/vuln/detail/CVE-2025-49133)
 漏洞归属组件：[swtpm](https://gitee.com/src-openeuler/swtpm)
 漏洞归属的版本：0.3.3,0.8.0
 CVSS V3.x分值：
  BaseScore：5.5 Medium
  Vector：CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  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.
 漏洞公开时间：2025-06-11 04:15:24
 漏洞创建时间：2025-08-10 13:51:42
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-49133
<details>
<summary>更多参考(点击展开)</summary>

无
</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  其他
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
| stefanberger/libtpms |  | https://github.com/stefanberger/libtpms/commit/04b2d8e9afc0a9b6bffe562a23e58c0de11532d1.patch |  | ljqc |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
  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.
 openEuler评分：
  5.5
 Vector：CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.master(0.8.0):受影响
2.openEuler-20.03-LTS-SP4(0.3.3):受影响
3.openEuler-22.03-LTS-SP3(0.3.3):受影响
4.openEuler-22.03-LTS-SP4(0.3.3):受影响
5.openEuler-24.03-LTS(0.8.0):受影响
6.openEuler-24.03-LTS-Next(0.8.0):受影响
7.openEuler-24.03-LTS-SP1(0.8.0):受影响
8.openEuler-24.03-LTS-SP2(0.8.0):受影响
9.openEuler-24.03-LTS-SP3(0.8.0):受影响

修复是否涉及abi变化(是/否)：
  1.master(0.8.0):否
2.openEuler-20.03-LTS-SP4(0.3.3):否
3.openEuler-22.03-LTS-SP3(0.3.3):否
4.openEuler-22.03-LTS-SP4(0.3.3):否
5.openEuler-24.03-LTS(0.8.0):否
6.openEuler-24.03-LTS-Next(0.8.0):否
7.openEuler-24.03-LTS-SP1(0.8.0):否
8.openEuler-24.03-LTS-SP2(0.8.0):否
9.openEuler-24.03-LTS-SP3(0.8.0):否

原因说明：
  1.master(0.8.0):正常修复
2.openEuler-20.03-LTS-SP4(0.3.3):正常修复
3.openEuler-22.03-LTS-SP3(0.3.3):正常修复
4.openEuler-22.03-LTS-SP4(0.3.3):正常修复
5.openEuler-24.03-LTS(0.8.0):正常修复
6.openEuler-24.03-LTS-Next(0.8.0):正常修复
7.openEuler-24.03-LTS-SP1(0.8.0):正常修复
8.openEuler-24.03-LTS-SP2(0.8.0):正常修复
9.openEuler-24.03-LTS-SP3(0.8.0):正常修复

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