Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.13 until 7.0.17, the SMTP MIME quoted-printable decoder in src/util-decode-mime.c can read one byte past a heap buffer when a quoted-printable escape sequence is split across traffic chunks and the following chunk contains exactly one byte. Crafted SMTP traffic can trigger the out-of-bounds read and crash Suricata when decode-quoted-printable MIME decoding is enabled. This issue is fixed in version 7.0.17.
Affected products
oisf: suricata
References4
- github.com/OISF/suricata/security/advisories/GHSA-qxm4-q7vx-7xj4 MitigationVendor Advisory
- redmine.openinfosecfoundation.org/issues/8608 ExploitVendor Advisory
- github.com/OISF/suricata/commit/19880f9d5bbe2b8f8e8867a577848dc… Patch
- github.com/OISF/suricata/releases/tag/suricata-7.0.17 Release Notes
Metrics
- CVSS 3.1
-
9.1
CRITICAL
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - EPSS — exploit probability
- 0% percentile: 37 · as of 8 November 2026
- CWE
- CWE-125
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