diff options
Diffstat (limited to 'net-wireless/hostapd/files/hostapd-2.9-ASN-1-Validate-DigestAlgorithmIdentifier-parameters.patch')
| -rw-r--r-- | net-wireless/hostapd/files/hostapd-2.9-ASN-1-Validate-DigestAlgorithmIdentifier-parameters.patch | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/net-wireless/hostapd/files/hostapd-2.9-ASN-1-Validate-DigestAlgorithmIdentifier-parameters.patch b/net-wireless/hostapd/files/hostapd-2.9-ASN-1-Validate-DigestAlgorithmIdentifier-parameters.patch deleted file mode 100644 index 8c8ba9335504..000000000000 --- a/net-wireless/hostapd/files/hostapd-2.9-ASN-1-Validate-DigestAlgorithmIdentifier-parameters.patch +++ /dev/null @@ -1,115 +0,0 @@ -From a0541334a6394f8237a4393b7372693cd7e96f15 Mon Sep 17 00:00:00 2001 -From: Jouni Malinen <j@w1.fi> -Date: Sat, 13 Mar 2021 18:19:31 +0200 -Subject: ASN.1: Validate DigestAlgorithmIdentifier parameters - -The supported hash algorithms do not use AlgorithmIdentifier parameters. -However, there are implementations that include NULL parameters in -addition to ones that omit the parameters. Previous implementation did -not check the parameters value at all which supported both these cases, -but did not reject any other unexpected information. - -Use strict validation of digest algorithm parameters and reject any -unexpected value when validating a signature. This is needed to prevent -potential forging attacks. - -Signed-off-by: Jouni Malinen <j@w1.fi> ---- - src/tls/pkcs1.c | 21 +++++++++++++++++++++ - src/tls/x509v3.c | 20 ++++++++++++++++++++ - 2 files changed, 41 insertions(+) - -diff --git a/src/tls/pkcs1.c b/src/tls/pkcs1.c -index bbdb0d7..5761dfe 100644 ---- a/src/tls/pkcs1.c -+++ b/src/tls/pkcs1.c -@@ -244,6 +244,8 @@ int pkcs1_v15_sig_ver(struct crypto_public_key *pk, - os_free(decrypted); - return -1; - } -+ wpa_hexdump(MSG_MSGDUMP, "PKCS #1: DigestInfo", -+ hdr.payload, hdr.length); - - pos = hdr.payload; - end = pos + hdr.length; -@@ -265,6 +267,8 @@ int pkcs1_v15_sig_ver(struct crypto_public_key *pk, - os_free(decrypted); - return -1; - } -+ wpa_hexdump(MSG_MSGDUMP, "PKCS #1: DigestAlgorithmIdentifier", -+ hdr.payload, hdr.length); - da_end = hdr.payload + hdr.length; - - if (asn1_get_oid(hdr.payload, hdr.length, &oid, &next)) { -@@ -273,6 +277,23 @@ int pkcs1_v15_sig_ver(struct crypto_public_key *pk, - os_free(decrypted); - return -1; - } -+ wpa_hexdump(MSG_MSGDUMP, "PKCS #1: Digest algorithm parameters", -+ next, da_end - next); -+ -+ /* -+ * RFC 5754: The correct encoding for the SHA2 algorithms would be to -+ * omit the parameters, but there are implementation that encode these -+ * as a NULL element. Allow these two cases and reject anything else. -+ */ -+ if (da_end > next && -+ (asn1_get_next(next, da_end - next, &hdr) < 0 || -+ !asn1_is_null(&hdr) || -+ hdr.payload + hdr.length != da_end)) { -+ wpa_printf(MSG_DEBUG, -+ "PKCS #1: Unexpected digest algorithm parameters"); -+ os_free(decrypted); -+ return -1; -+ } - - if (!asn1_oid_equal(&oid, hash_alg)) { - char txt[100], txt2[100]; -diff --git a/src/tls/x509v3.c b/src/tls/x509v3.c -index a8944dd..df337ec 100644 ---- a/src/tls/x509v3.c -+++ b/src/tls/x509v3.c -@@ -1964,6 +1964,7 @@ int x509_check_signature(struct x509_certificate *issuer, - os_free(data); - return -1; - } -+ wpa_hexdump(MSG_MSGDUMP, "X509: DigestInfo", hdr.payload, hdr.length); - - pos = hdr.payload; - end = pos + hdr.length; -@@ -1985,6 +1986,8 @@ int x509_check_signature(struct x509_certificate *issuer, - os_free(data); - return -1; - } -+ wpa_hexdump(MSG_MSGDUMP, "X509: DigestAlgorithmIdentifier", -+ hdr.payload, hdr.length); - da_end = hdr.payload + hdr.length; - - if (asn1_get_oid(hdr.payload, hdr.length, &oid, &next)) { -@@ -1992,6 +1995,23 @@ int x509_check_signature(struct x509_certificate *issuer, - os_free(data); - return -1; - } -+ wpa_hexdump(MSG_MSGDUMP, "X509: Digest algorithm parameters", -+ next, da_end - next); -+ -+ /* -+ * RFC 5754: The correct encoding for the SHA2 algorithms would be to -+ * omit the parameters, but there are implementation that encode these -+ * as a NULL element. Allow these two cases and reject anything else. -+ */ -+ if (da_end > next && -+ (asn1_get_next(next, da_end - next, &hdr) < 0 || -+ !asn1_is_null(&hdr) || -+ hdr.payload + hdr.length != da_end)) { -+ wpa_printf(MSG_DEBUG, -+ "X509: Unexpected digest algorithm parameters"); -+ os_free(data); -+ return -1; -+ } - - if (x509_sha1_oid(&oid)) { - if (signature->oid.oid[6] != 5 /* sha-1WithRSAEncryption */) { --- -cgit v0.12 - |