From ff593b01f73635733c3c3fc61d08fbb4b4f221db Mon Sep 17 00:00:00 2001 From: CentOS Sources Date: Aug 10 2021 04:27:27 +0000 Subject: import tpm2-tools-4.1.1-5.el8 --- diff --git a/SOURCES/0001-tpm2_import-fix-fixed-AES-key-CVE-2021-3565.patch b/SOURCES/0001-tpm2_import-fix-fixed-AES-key-CVE-2021-3565.patch new file mode 100644 index 0000000..53814a4 --- /dev/null +++ b/SOURCES/0001-tpm2_import-fix-fixed-AES-key-CVE-2021-3565.patch @@ -0,0 +1,46 @@ +From c069e4f179d5e6653a84fb236816c375dca82515 Mon Sep 17 00:00:00 2001 +From: William Roberts +Date: Fri, 21 May 2021 12:22:31 -0500 +Subject: [PATCH] tpm2_import: fix fixed AES key CVE-2021-3565 + +tpm2_import used a fixed AES key for the inner wrapper, which means that +a MITM attack would be able to unwrap the imported key. Even the +use of an encrypted session will not prevent this. The TPM only +encrypts the first parameter which is the fixed symmetric key. + +To fix this, ensure the key size is 16 bytes or bigger and use +OpenSSL to generate a secure random AES key. + +Fixes: #2738 + +Signed-off-by: William Roberts +--- + tools/tpm2_import.c | 12 +++++++++++- + 1 file changed, 11 insertions(+), 1 deletion(-) + +diff --git a/tools/tpm2_import.c b/tools/tpm2_import.c +index cfb6f207ba9c..f44326c87e7e 100644 +--- a/tools/tpm2_import.c ++++ b/tools/tpm2_import.c +@@ -118,7 +118,17 @@ static tool_rc key_import(ESYS_CONTEXT *ectx, TPM2B_PUBLIC *parent_pub, + TPM2B_DATA enc_sensitive_key = { + .size = parent_pub->publicArea.parameters.rsaDetail.symmetric.keyBits.sym / 8 + }; +- memset(enc_sensitive_key.buffer, 0xFF, enc_sensitive_key.size); ++ ++ if(enc_sensitive_key.size < 16) { ++ LOG_ERR("Calculated wrapping keysize is less than 16 bytes, got: %u", enc_sensitive_key.size); ++ return tool_rc_general_error; ++ } ++ ++ int ossl_rc = RAND_bytes(enc_sensitive_key.buffer, enc_sensitive_key.size); ++ if (ossl_rc != 1) { ++ LOG_ERR("RAND_bytes failed: %s", ERR_error_string(ERR_get_error(), NULL)); ++ return tool_rc_general_error; ++ } + + /* + * Calculate the object name. +-- +2.31.0 + diff --git a/SPECS/tpm2-tools.spec b/SPECS/tpm2-tools.spec index cab3334..65f2e6f 100644 --- a/SPECS/tpm2-tools.spec +++ b/SPECS/tpm2-tools.spec @@ -1,6 +1,6 @@ Name: tpm2-tools Version: 4.1.1 -Release: 3%{?dist} +Release: 5%{?dist} Summary: A TPM2.0 testing tool build upon TPM2.0-TSS License: BSD @@ -20,6 +20,7 @@ Patch10: 0001-tpm2_policycountertimer-Fix-an-issue-where-operandB-.patch Patch11: 0001-tools-tpm2_nvcertify.c-Fix-incompatible-pointer-cast.patch Patch12: 0001-tools-tpm2_nvreadpublic-Fix-resource-leak.patch Patch13: 0001-lib-files.c-Fix-an-issue-where-execution-could-not-r.patch +Patch14: 0001-tpm2_import-fix-fixed-AES-key-CVE-2021-3565.patch BuildRequires: gcc-c++ BuildRequires: libtool @@ -60,6 +61,14 @@ tpm2-tools is a batch of testing tools for tpm2.0. It is based on tpm2-tss. %{_mandir}/man1/tpm2_*.1.gz %changelog +* Mon Aug 09 2021 Jerry Snitselaar - 4.1.1-5 +- Bump nvr to trigger osci. +resolves: rhbz#1965981 + +* Tue Jun 01 2021 Jerry Snitselaar - 4.1.1-4 +- Fix CVE-2021-3565 +resolves: rhbz#1965981 + * Fri May 14 2021 Jerry Snitselaar - 4.1.1-3 - Fix resource leak. - Fix to restrict policy digest size.