| Package | Affected versions | Patched versions |
|---|---|---|
| libesmtp | = 0.1= 0.2= 0.3= 0.4= 0.5= 0.6= 0.6.1= 0.7.0= 0.7.1= 0.8.0= 0.8.1= 0.8.10= 0.8.11= 0.8.12= 0.8.2= 0.8.3= 0.8.4= 0.8.5= 0.8.6= 0.8.7= 0.8.8= 0.8.9= 1.0= 1.0.1= 1.0.2= 1.0.3= 1.0.4 |
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.
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