Author: emaste Date: Tue May 12 16:38:28 2020 New Revision: 360968 URL: https://svnweb.freebsd.org/changeset/base/360968
Log: libalias: fix potential memory disclosure from ftp module admbugs: 956 Submitted by: markj Reported by: Vishnu Dev TJ working with Trend Micro Zero Day Initiative Security: FreeBSD-SA-20:13.libalias Security: CVE-2020-7455 Security: ZDI-CAN-10849 Modified: head/sys/netinet/libalias/alias_ftp.c Modified: head/sys/netinet/libalias/alias_ftp.c ============================================================================== --- head/sys/netinet/libalias/alias_ftp.c Tue May 12 16:33:04 2020 (r360967) +++ head/sys/netinet/libalias/alias_ftp.c Tue May 12 16:38:28 2020 (r360968) @@ -754,7 +754,8 @@ NewFtpMessage(struct libalias *la, struct ip *pip, { u_short new_len; - new_len = htons(hlen + slen); + new_len = htons(hlen + + MIN(slen, maxpacketsize - hlen)); DifferentialChecksum(&pip->ip_sum, &new_len, &pip->ip_len, _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"