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opendkim
cve-2020-12272.patch
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File cve-2020-12272.patch of Package opendkim
Description: LIBOPENDKIM: Confirm that the value of "d=" is properly formed. Author: Murray S. Kucherawy <msk@trusteddomain.org> Origin: upstream, https://github.com/trusteddomainproject/OpenDKIM/commit/14d54524e0a97d3fe9b80441907d7e356c9ded04 --- a/libopendkim/dkim.c +++ b/libopendkim/dkim.c @@ -775,6 +775,25 @@ return DKIM_STAT_SYNTAX; } + /* confirm the "d=" domain name is well formed */ + value = dkim_param_get(set, (u_char *) "d"); + for (p = value; *p != '\0'; p++) + { + if (!(isalpha(*p) || + isdigit(*p) || + *p == '-' || + *p == '_' || + *p == '.')) + { + dkim_error(dkim, "malformed \"d=\" tag value"); + if (syntax) + dkim_set_free(dkim, set); + else + set->set_bad = TRUE; + return DKIM_STAT_SYNTAX; + } + } + #ifdef _FFR_CONDITIONAL /* confirm we have the right signature version */ if (set->set_minv > 1)
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