FreshPorts - VuXML

ARM Limited reports:

When the client creates its ClientHello message, due to insufficient bounds checking it can overflow the heap-based buffer containing the message while writing some extensions. Two extensions in particular could be used by a remote attacker to trigger the overflow: the session ticket extension and the server name indication (SNI) extension.

ge 1.2.0 lt 1.2.17

ge 1.3.0 lt 1.3.14

< 2.1.2

ARM Limited reports:

MD5 handshake signatures in TLS 1.2 are vulnerable to the SLOTH attack on TLS 1.2 server authentication. They have been disabled by default. Other attacks from the SLOTH paper do not apply to any version of mbed TLS or PolarSSL.

< 1.3.16

< 2.2.1

ARM Limited reports:

In order to strengthen the minimum requirements for connections and to protect against the Logjam attack, the minimum size of Diffie-Hellman parameters accepted by the client has been increased to 1024 bits.

In addition the default size for the Diffie-Hellman parameters on the server are increased to 2048 bits. This can be changed with ssl_set_dh_params() in case this is necessary.

ge 1.2.0 lt 1.2.15

ge 1.3.0 lt 1.3.12

Janos Follath reports:

• If a malicious peer supplies a certificate with a specially crafted secp224k1 public key, then an attacker can cause the server or client to attempt to free block of memory held on stack. Depending on the platform, this could result in a Denial of Service (client crash) or potentially could be exploited to allow remote code execution with the same privileges as the host application.
• If the client and the server both support MD5 and the client can be tricked to authenticate to a malicious server, then the malicious server can impersonate the client. To launch this man in the middle attack, the adversary has to compute a chosen-prefix MD5 collision in real time. This is very expensive computationally, but can be practical. Depending on the platform, this could result in a Denial of Service (client crash) or potentially could be exploited to allow remote code execution with the same privileges as the host application.
• A bug in the logic of the parsing of a PEM encoded Certificate Revocation List in mbedtls_x509_crl_parse() can result in an infinite loop. In versions before 1.3.10 the same bug results in an infinite recursion stack overflow that usually crashes the application. Methods and means of acquiring the CRLs is not part of the TLS handshake and in the strict TLS setting this vulnerability cannot be triggered remotely. The vulnerability cannot be triggered unless the application explicitly calls mbedtls_x509_crl_parse() or mbedtls_x509_crl_parse_file()on a PEM formatted CRL of untrusted origin. In which case the vulnerability can be exploited to launch a denial of service attack against the application.

< 2.4.2

< 1.3.19

ARM Limited reports:

Florian Weimar from Red Hat published on Lenstra's RSA-CRT attach for PKCS#1 v1.5 signatures. These releases include countermeasures against that attack.

Fabian Foerg of Gotham Digital Science found a possible client-side NULL pointer dereference, using the AFL Fuzzer. This dereference can only occur when misusing the API, although a fix has still been implemented.

ge 1.2.0 lt 1.2.16

ge 1.3.0 lt 1.3.13

< 2.1.1

Simon Butcher reports:

• When the truncated HMAC extension is enabled and CBC is used, sending a malicious application packet can be used to selectively corrupt 6 bytes on the peer's heap, potentially leading to a crash or remote code execution. This can be triggered remotely from either side in both TLS and DTLS.
• When RSASSA-PSS signature verification is enabled, sending a maliciously constructed certificate chain can be used to cause a buffer overflow on the peer's stack, potentially leading to crash or remote code execution. This can be triggered remotely from either side in both TLS and DTLS.

< 2.7.0

< 1.3.22

Simon Butcher reports:

• Defend against Bellcore glitch attacks by verifying the results of RSA private key operations.
• Fix implementation of the truncated HMAC extension. The previous implementation allowed an offline 2^80 brute force attack on the HMAC key of a single, uninterrupted connection (with no resumption of the session).
• Reject CRLs containing unsupported critical extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
• Fix a buffer overread in ssl_parse_server_key_exchange() that could cause a crash on invalid input.
• Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a crash on invalid input.

< 2.7.2

ge *

PolarSSL team reports:

During the parsing of a ASN.1 sequence, a pointer in the linked list of asn1_sequence is not initialized by asn1_get_sequence_of(). In case an error occurs during parsing of the list, a situation is created where the uninitialized pointer is passed to polarssl_free().

This sequence can be triggered when a PolarSSL entity is parsing a certificate. So practically this means clients when receiving a certificate from the server or servers in case they are actively asking for a client certificate.

ge 1.2.0 lt 1.2.12_1

ge 1.3.0 lt 1.3.9_1