The match_component function in smtp-tls.c in libESMTP 1.0.3.r1, and possibly other versions including 1.0.4, treats two strings as equal if one is a substring of the other, which allows remote attackers to spoof trusted certificates via a crafted subjectAltName.
Vendor
stafford.uklinux vulnerabilities
2 published CVES affecting stafford.uklinux, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 2
- Critical
- 0
- High
- 0
- Medium
- 2
- Low
- 0
- Unscored
- 0
- CISA KEV
- 0
Products
Latest stafford.uklinux CVEs
Newest publication first
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MediumCVSS 6.8 EPSS 1.4%
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MediumCVSS 6.8 EPSS 1.00%
libESMTP, probably 1.0.4 and earlier, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitima...
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.