Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2019-17543

8.1 · HIGH

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.

Published Oct 14, 2019CWE-787EPSS 9.12%

Overview

CVE-2019-17543 is a high-severity vulnerability. It was published on October 14, 2019 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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."

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2019-10/msg00069.htmlReflists.opensuse.org/opensuse-security-announce/2019-10/msg00070.htmlRefbugs.chromium.org/p/oss-fuzz/issues/detail?id=15941GitHubgithub.com/lz4/lz4/compare/v1.9.1...v1.9.2GitHubgithub.com/lz4/lz4/issues/801GitHubgithub.com/lz4/lz4/pull/756GitHubgithub.com/lz4/lz4/pull/760Reflists.apache.org/thread.html/25015588b770d67470b7ba7ea49a305d6735dd7f00eabe7d50ec1e17%40%3Cissues.arrow.apache.org%3EReflists.apache.org/thread.html/543302d55e2d2da4311994e9b0debdc676bf3fd05e1a2be3407aa2d6%40%3Cissues.arrow.apache.org%3EReflists.apache.org/thread.html/793012683dc0fa6819b7c2560e6cf990811014c40c7d75412099c357%40%3Cissues.arrow.apache.org%3E

How CyberStrike helps

Frequently asked questions

What is CVE-2019-17543?

CVE-2019-17543 is a high-severity vulnerability. It was published on October 14, 2019 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2019-17543?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-17543?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-17543?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-17543 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2019

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999