What’s Vulnerable › Vulnerabilities

CVE-2017-6419

• Severity: high (CVSS 7.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-08-07 · updated 2026-06-17
• Weakness: CWE-119

Description

mspack/lzxd.c in libmspack 0.5alpha, as used in ClamAV 0.99.2, allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted CHM file.

Affected products

• Libmspack Project Libmspack: 0.5-alpha

References

• http://www.debian.org/security/2017/dsa-3946
• https://bugzilla.clamav.net/show_bug.cgi?id=11701
• https://github.com/varsleak/varsleak-vul/blob/master/clamav-vul/heap-overflow/clamav_chm_crash.md
• https://github.com/vrtadmin/clamav-devel/commit/a83773682e856ad6529ba6db8d1792e6d515d7f1
• https://lists.debian.org/debian-lts-announce/2018/02/msg00014.html
• https://security.gentoo.org/glsa/201804-16
• http://www.debian.org/security/2017/dsa-3946
• https://bugzilla.clamav.net/show_bug.cgi?id=11701
• https://github.com/varsleak/varsleak-vul/blob/master/clamav-vul/heap-overflow/clamav_chm_crash.md
• https://github.com/vrtadmin/clamav-devel/commit/a83773682e856ad6529ba6db8d1792e6d515d7f1
• https://lists.debian.org/debian-lts-announce/2018/02/msg00014.html
• https://security.gentoo.org/glsa/201804-16

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