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CVE-2017-17806
The HMAC implementation (crypto/hmac.c) in the Linux kernel before 4.14.8 does not validate that the underlying cryptographic hash…
High7.8EPSS 0.56%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The HMAC implementation (crypto/hmac.c) in the Linux kernel before 4.14.8 does not validate that the underlying cryptographic hash algorithm is unkeyed, allowing a local attacker able to use the AF_ALG-based hash interface (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash algorithm (CONFIG_CRYPTO_SHA3) to cause a kernel stack buffer overflow by executing a crafted sequence of system calls that encounter a missing SHA-3 initialization.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.56% · top 53% of all CVEs (5 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
n/a
- affected n/a
References (21)
- USN-3617-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-3619-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- DSA-4082 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- USN-3617-3 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [debian-lts-announce] 20180107 [SECURITY] [DLA 1232-1] linux security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- SUSE-SU-2018:0012 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- USN-3583-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- SUSE-SU-2018:0011 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://github.com/torvalds/linux/commit/af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1 (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-3632-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- openSUSE-SU-2018:0022 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 102293 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2018:2948 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- USN-3583-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8 (opens in a new tab)x_refsource_CONFIRMx_transferred
- SUSE-SU-2018:0010 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- DSA-4073 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- USN-3617-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-3619-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- openSUSE-SU-2018:0023 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2017-17806)Record last updated .