Date: Wed, 16 Jan 2019 15:12:20 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r343096 - stable/12/crypto/openssh Message-ID: <201901161512.x0GFCKK1018340@repo.freebsd.org>
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Author: emaste Date: Wed Jan 16 15:12:19 2019 New Revision: 343096 URL: https://svnweb.freebsd.org/changeset/base/343096 Log: MFC r343043: scp: disallow empty or current directory Obtained from: OpenBSD scp.c 1.198 Security: CVE-2018-20685 Sponsored by: The FreeBSD Foundation Modified: stable/12/crypto/openssh/scp.c Directory Properties: stable/12/ (props changed) Modified: stable/12/crypto/openssh/scp.c ============================================================================== --- stable/12/crypto/openssh/scp.c Wed Jan 16 14:42:33 2019 (r343095) +++ stable/12/crypto/openssh/scp.c Wed Jan 16 15:12:19 2019 (r343096) @@ -1106,7 +1106,8 @@ sink(int argc, char **argv) SCREWUP("size out of range"); size = (off_t)ull; - if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) { + if (*cp == '\0' || strchr(cp, '/') != NULL || + strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) { run_err("error: unexpected filename: %s", cp); exit(1); }
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