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CVE-2019-17543
LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call…
High8.1EPSS 10.5%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states "only a few specific / uncommon usages of the API are at risk."
Timeline
ID reserved
By mitre
Published
- 7 years later
· 7 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 10.5% · top 4.2% of all CVEs (8 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Weakness
Affected products
n/a
- affected n/a
References (20)
- [arrow-issues] 20191024 [jira] [Created] (ARROW-6984) Update LZ4 to 1.9.2 for CVE-2019-17543 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [arrow-dev] 20191024 [jira] [Created] (ARROW-6984) Update LZ4 to 1.9.2 for CVE-2019-17543 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [arrow-issues] 20191024 [jira] [Updated] (ARROW-6984) [C++] Update LZ4 to 1.9.2 for CVE-2019-17543 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [arrow-issues] 20191024 [jira] [Assigned] (ARROW-6984) [C++] Update LZ4 to 1.9.2 for CVE-2019-17543 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [arrow-issues] 20191025 [jira] [Commented] (ARROW-6984) [C++] Update LZ4 to 1.9.2 for CVE-2019-17543 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- openSUSE-SU-2019:2399 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2019:2398 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- [arrow-issues] 20191106 [jira] [Resolved] (ARROW-6984) [C++] Update LZ4 to 1.9.2 for CVE-2019-17543 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [kudu-issues] 20200621 [jira] [Updated] (KUDU-3156) Whether the CVE-2019-17543 vulnerability of lz affects kudu (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [kudu-issues] 20200709 [jira] [Resolved] (KUDU-3156) Whether the CVE-2019-17543 vulnerability of lz affects kudu (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://www.oracle.com/security-alerts/cpuoct2020.html (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/lz4/lz4/pull/756 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/lz4/lz4/pull/760 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/lz4/lz4/compare/v1.9.1...v1.9.2 (opens in a new tab)x_refsource_MISCx_transferred
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15941 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/lz4/lz4/issues/801 (opens in a new tab)x_refsource_MISCx_transferred
- https://lists.apache.org/thread.html/r0fb226357e7988a241b06b93bab065bcea2eb38658b382e485960e26%40%3Cissues.kudu.apache.org%3E (opens in a new tab)x_refsource_MISCx_transferred
- https://www.oracle.com//security-alerts/cpujul2021.html (opens in a new tab)x_refsource_MISCx_transferred
- https://security.netapp.com/advisory/ntap-20210723-0001/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html (opens in a new tab)
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://cveledger.app/cve/CVE-2019-17543)Record last updated .