Date: Tue, 21 Apr 2020 15:47:59 +0000 (UTC) From: Gordon Tetlow <gordon@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: r360147 - stable/12/crypto/openssl/ssl Message-ID: <202004211547.03LFlxbS043384@repo.freebsd.org>
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Author: gordon Date: Tue Apr 21 15:47:58 2020 New Revision: 360147 URL: https://svnweb.freebsd.org/changeset/base/360147 Log: MFC: r360146 Fix OpenSSL remote denial of service. See https://www.openssl.org/news/secadv/20200421.txt for details. Approved by: so Security: FreeBSD-SA-20:11.openssl Security: CVE-2020-1967 Modified: stable/12/crypto/openssl/ssl/t1_lib.c Directory Properties: stable/12/ (props changed) Modified: stable/12/crypto/openssl/ssl/t1_lib.c ============================================================================== --- stable/12/crypto/openssl/ssl/t1_lib.c Tue Apr 21 15:44:20 2020 (r360146) +++ stable/12/crypto/openssl/ssl/t1_lib.c Tue Apr 21 15:47:58 2020 (r360147) @@ -2130,7 +2130,7 @@ static int tls1_check_sig_alg(SSL *s, X509 *x, int def sigalg = use_pc_sigalgs ? tls1_lookup_sigalg(s->s3->tmp.peer_cert_sigalgs[i]) : s->shared_sigalgs[i]; - if (sig_nid == sigalg->sigandhash) + if (sigalg != NULL && sig_nid == sigalg->sigandhash) return 1; } return 0;
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