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Vulnerability record · CVE-2017-12377 · published 26 January 2018

CVE-2017-12377: Debian linux out-of-bounds read vulnerability

Debian · Debian Linux

ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or potentially execute arbitrary code on an affected device. The vulnerability is due to improper input validation checking mechanisms in mew packet files sent to an affected device. A successful exploit could cause a heap-based buffer over-read condition in mew.c when ClamAV scans the malicious file, allowing the attacker to cause a DoS condition or potentially execute arbitrary code on the affected device.

9.8 CVSS 3.0 Critical EPSS 12% · top 4.1% CWE-125 · Out-of-bounds read
9.8CVSS 3.0 base score, v2 10.0
12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
10References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or potentially execute arbitrary code on an affected device. The vulnerability is due to improper input validation checking mechanisms in mew packet files sent to an affected device. A successful exploit could cause a heap-based buffer over-read condition in mew.c when ClamAV scans the malicious file, allowing the attacker to cause a DoS condition or potentially execute arbitrary code on the affected device.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://blog.clamav.net/2018/01/clamav-0993-has-been-released.html Release NotesVendor Advisory
https://bugzilla.clamav.net/show_bug.cgi?id=11943 ExploitIssue TrackingVendor Advisory
https://lists.debian.org/debian-lts-announce/2018/01/msg00035.html Mailing ListThird Party Advisory
https://usn.ubuntu.com/3550-1/
https://usn.ubuntu.com/3550-2/
http://blog.clamav.net/2018/01/clamav-0993-has-been-released.html Release NotesVendor Advisory
https://bugzilla.clamav.net/show_bug.cgi?id=11943 ExploitIssue TrackingVendor Advisory
https://lists.debian.org/debian-lts-announce/2018/01/msg00035.html Mailing ListThird Party Advisory
https://usn.ubuntu.com/3550-1/
https://usn.ubuntu.com/3550-2/

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Source: NIST National Vulnerability Database (record CVE-2017-12377), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.