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Vulnerability record · CVE-2017-12375 · published 26 January 2018

CVE-2017-12375: Debian linux memory buffer overflow vulnerability

Debian · Debian Linux

The 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 on an affected device. The vulnerability is due to a lack of input validation checking mechanisms during certain mail parsing functions (the rfc2047 function in mbox.c). An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted email to the affected device. This action could cause a buffer overflow condition when ClamAV scans the malicious email, allowing the attacker to potentially cause a DoS condition on an affected device.

7.5 CVSS 3.0 High EPSS 5.6% · top 7.4% CWE-119 · Memory buffer overflow
7.5CVSS 3.0 base score, v2 7.8
5.6%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

The 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 on an affected device. The vulnerability is due to a lack of input validation checking mechanisms during certain mail parsing functions (the rfc2047 function in mbox.c). An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted email to the affected device. This action could cause a buffer overflow condition when ClamAV scans the malicious email, allowing the attacker to potentially cause a DoS condition on an affected device.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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=11940 ExploitIssue TrackingPatchVendor 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=11940 ExploitIssue TrackingPatchVendor 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-2017-12375), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.