The (1) Conn_GetCipherInfo and (2) Conn_UsesSSL functions in src/ngircd/conn.c in ngIRCd 13 and 14, when SSL/TLS support is present and standalone mode is disabled, allow remote attackers to cause a denial of service (application crash) by sending the MOTD command from another server in the same IRC network, possibly related to an array index error.

References

• https://nvd.nist.gov/vuln/detail/CVE-2009-4652
• https://exchange.xforce.ibmcloud.com/vulnerabilities/54272
• http://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd.git;a=blobdiff;f=src/ngircd/conn.c;h=c6095a31c613bc5ca127d55b8723e15b836f1cca;hp=9752a6191c7e2da5b0df64779e9cc28ad1e6241c;hb=627b0b713c52406e50c84bb9459e7794262920a2;hpb=95428a72ffb5214826b61d5e77f860e7ef6a6c9e
• http://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd.git;a=commit;h=627b0b713c52406e50c84bb9459e7794262920a2
• http://ngircd.barton.de/doc/ChangeLog
• http://ngircd.barton.de/doc/NEWS
• http://secunia.com/advisories/37343
• http://www.securityfocus.com/bid/37021
• http://www.vupen.com/english/advisories/2009/3240
• http://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd.git%3Ba=blobdiff%3Bf=src/ngircd/conn.c%3Bh=c6095a31c613bc5ca127d55b8723e15b836f1cca%3Bhp=9752a6191c7e2da5b0df64779e9cc28ad1e6241c%3Bhb=627b0b713c52406e50c84bb9459e7794262920a2%3Bhpb=95428a72ffb5214826b61d5e77f860e7ef6a6c9e
• http://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd.git%3Ba=commit%3Bh=627b0b713c52406e50c84bb9459e7794262920a2