Astra Linux – Vulnerability in openssl, openssl1.0

ASN.1 strings are internally represented within OpenSSL as an ASN1STRING structure, which contains a buffer for storing the string data and a field for storing the buffer length. This is different from regular C strings, which are represented as a buffer for the string data, terminated with a NUL...

Astra Linux – Vulnerability in OpenSSL

The crehash script does not properly sanitize shell metacharacters to prevent command injection. This script is distributed by some operating systems in a manner that it is automatically executed. On such operating systems, an attacker could execute arbitrary commands with the privileges of the...

Astra Linux – Vulnerability in OpenSSL

To decrypt SM2 encrypted data, an application is expected to call the API function EVPPKEYdecrypt. Typically, an application will call this function twice. The first time, upon entry, the “out” parameter can be NULL, and upon exit, the “outlen” parameter contains the buffer size required to hold...

Astra Linux – Vulnerability in OpenSSL

The function PEMreadbioex reads a PEM file from a BIO, parses, and decodes the “name” e.g., “CERTIFICATE”, any header data, and the payload data. If the function succeeds, the “nameout”, “header”, and “data” arguments are populated with pointers to buffers containing the relevant decoded data. Th...

Astra Linux – Vulnerability in openssl1.0

In situations where an attacker receives automated notifications of the success or failure of a decryption attempt, an attacker can recover the CMS/PKCS7 transport encryption key after sending a very large number of messages to be decrypted. They can also decrypt any RSA-encrypted message encrypt...

Astra Linux – Vulnerability in PHP 7.3

In PHP versions 7.2.x below 7.2.34, 7.3.x below 7.3.23, and 7.4.x below 7.4.11, when AES-CCM mode is used with the opensslencrypt function and a 12-byte IV is provided, only the first 7 bytes of the IV are actually used. This can result in reduced security and incorrect encrypted data...

Astra Linux – Vulnerability in openssl1.0

Normally, in OpenSSL, EC groups always contain a co-factor, and this co-factor is used in code paths that resist side channels. However, in some cases, it is possible to create a group using explicit parameters instead of a named curve. In these cases, the group may not contain a co-factor. This...

Astra Linux – Vulnerability in OpenSSL

Issue summary: Generating excessively long X9.42 DH keys or checking overly long X9.42 DH keys or parameters can be very slow. Applications that use functions like DHgeneratekey to generate an X9.42 DH key may experience prolonged delays. Similarly, applications that use functions like...

Astra Linux – Vulnerability in OpenSSL

Issue Summary: Checking excessively long DH keys or parameters can be very slow. Impact Summary: Applications that use functions like DHcheck, DHcheckex, or EVPPKEYparamcheck to check DH keys or parameters may experience prolonged delays. If the keys or parameters are obtained from an untrusted...

Astra Linux – Vulnerability in OpenSSL

There exists a timing-based side channel in the OpenSSL RSA Decryption implementation. This vulnerability could be sufficient for an attacker to recover plaintext across a network in a Bleichenbacher-style attack. To successfully decrypt data, an attacker would need to be able to send a very larg...

Astra Linux – Vulnerability in OpenSSL

AES OCB mode for 32-bit x86 platforms, using the AES-NI assembly-optimized implementation, may not encrypt all of the data under certain circumstances. This could reveal sixteen bytes of data that were already present in the memory but were not written. In the special case of “in-place” encryptio...

Astra Linux – Vulnerability in OpenSSL

Issue summary: Processing a maliciously formatted PKCS12 file may cause OpenSSL to crash, leading to a potential Denial of Service attack. Impact summary: Applications that load files in PKCS12 format from untrusted sources may experience abrupt termination. A PKCS12 format file can contain...

Astra Linux – Vulnerability in PHP 8.1, PHP 7.3

The opensslprivatedecrypt function in PHP, when using PKCS1 padding OPENSSLPKCS1PADDING, which is the default, is vulnerable to the Marvin Attack unless it is used with an OpenSSL version that includes the changes from this pull request: https://github.com/openssl/openssl/pull/13817...

Astra Linux – Vulnerability in OpenSSL

The public API function BIOnewNDEF is a helper function used for streaming ASN.1 data via a BIO. It is primarily used internally by OpenSSL to support SMIME, CMS, and PKCS7 streaming capabilities. However, it can also be called directly by end-user applications. This function receives a BIO from...

Astra Linux – Vulnerability in OpenSSL

A security vulnerability has been identified in all supported versions of OpenSSL, related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use o...

Astra Linux – Vulnerability in OpenSSL

There is a type confusion vulnerability related to X.400 address processing within an X.509 GENERALNAME. X.400 addresses are parsed as ASN1STRING, but the public structure definition for GENERALNAME incorrectly specifies the type of the x400Address field as ASN1TYPE. This field is subsequently...

Astra Linux – Vulnerability in OpenSSL

Applications that use non-default options when verifying certificates may be vulnerable to attacks from a malicious Certificate Authority CA to circumvent certain checks. Invalid certificate policies in leaf certificates are silently ignored by OpenSSL, and other certificate policy checks for tho...

Astra Linux – Vulnerability in OpenSSL

Issue summary: Checking excessively long DH keys or parameters can be very slow. Applications that use functions such as DHcheck, DHcheckex, or EVPPKEYparamcheck to check DH keys or parameters may experience prolonged delays. If the keys or parameters being checked were obtained from an untrusted...

Astra Linux – Vulnerability in openssl1.0

Calls to the EVPCipherUpdate, EVPEncryptUpdate, and EVPDecryptUpdate functions may cause the output length argument to overflow in some cases where the input length is close to the maximum permissible length for integers on the platform. In such cases, the return value from the function call will...

Astra Linux – Vulnerability in openssl1.0

The Raccoon attack exploits a flaw in the TLS specification, which allows an attacker to calculate the pre-master secret in connections that use a Diffie-Hellman DH-based ciphersuite. In such cases, the attacker can eavesdrop on all encrypted communications sent over that TLS connection. The atta...