CVE-2019-17543
Last modified
CVE-2019-17543 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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.". EPSS estimates a 9.12% chance of exploitation in the next 30 days.
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."
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Lz4 Project | Lz4 | < 1.9.2 |
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15941Third Party Advisory
- https://github.com/lz4/lz4/compare/v1.9.1...v1.9.2Third Party Advisory
- https://github.com/lz4/lz4/issues/801Third Party Advisory
- https://github.com/lz4/lz4/pull/756Patch, Third Party Advisory
- https://github.com/lz4/lz4/pull/760Patch, Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15941Third Party Advisory
- https://github.com/lz4/lz4/compare/v1.9.1...v1.9.2Third Party Advisory
- https://github.com/lz4/lz4/issues/801Third Party Advisory
- https://github.com/lz4/lz4/pull/756Patch, Third Party Advisory
- https://github.com/lz4/lz4/pull/760Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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