openssl: invalid pointer dereference in CMP server via crafted protectionAlg

A flaw was found in OpenSSL. A crafted CMP Certificate Management Protocol message can cause an invalid pointer dereference due to a missing type check in the password-based protection verification. A remote, unauthenticated attacker can crash applications acting as a CMP server or client,...

openssl: openssl: Denial of Service via race condition in certificate extension caching

A flaw was found in OpenSSL. A remote, unauthenticated attacker can cause a Denial of Service DoS by initiating concurrent connections to a multi-threaded Transport Layer Security TLS client or server verifying certificates. Due to improper synchronization when multiple threads simultaneously...

Important: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: openssl: openssl-3.5.8-0.1.hum1 aarch64, x8664 openssl-config-fips-3.5.8-0.1.hum1 aarch64, x8664 openssl-devel-3.5.8-0.1.hum1 aarch64, x8664 openssl-devel-engine-3.5.8-0.1.hum1 aarch64, x8664...

openssl: Possible Out of Bounds Read in X509_VERIFY_PARAM_set1_email()

A flaw was found in OpenSSL. When an application uses the X509VERIFYPARAMset1email function to validate a specially crafted S/MIME Secure/Multipurpose Internet Mail Extensions email address, an out-of-bounds read can occur. A remote attacker could exploit this vulnerability by sending a malicious...

openssl: CMP indefinite cache growth of ExtraCerts

A flaw was found in OpenSSL. The CMP Certificate Management Protocol implementation does not clear cached additional certificates when an invalid message is received, leading to excessive memory consumption. This allows a malicious client to repeatedly send requests containing unique extra...

openssl: OpenSSL: Heap buffer over-read in ASN.1 decoding can lead to denial of service or information disclosure.

A flaw was found in OpenSSL. An integer truncation vulnerability in the ASN.1 decoder can occur when processing a crafted DER-encoded ASN.1 structure with a primitive element exceeding 2 gigabytes. A remote attacker could exploit this to cause a heap buffer over-read. This may lead to an...

openssl: openssl: AEAD forgeries possible with empty ciphertext in EVP_Cipher()

A flaw in OpenSSL causes EVPCipher to skip AEAD tag verification for ChaCha20-Poly1305 and AES-OCB ciphers when decrypting empty ciphertexts. This allows remote attackers to submit forged messages that affected applications incorrectly accept as valid...

openssl: Trust-Anchor Substitution via cert/issuer Typo in CMP rootCaKeyUpdate

A flaw was found in the Certificate Management Protocol CMP implementation within OpenSSL. An attacker with existing Registration Authority RA level credentials could exploit an error in the certificate verification process during a Root Certificate Authority CA key update. This vulnerability...

openssl: excessive memory use buffering DTLS records for a future epoch

A flaw was found in OpenSSL. Receiving a DTLS Datagram Transport Layer Security record for a future epoch while a handshake is in progress causes OpenSSL to buffer an excessive amount of memory. This allows a peer to cause memory exhaustion, eventually resulting in a denial of service, using a...

openssl: NULL pointer dereference in QUIC server initial packet handling

A flaw was found in the OpenSSL QUIC Quick UDP Internet Connections server. A remote attacker could send a specially crafted QUIC initial packet with an invalid token. If the server's address validation is explicitly disabled, this could lead to a NULL pointer dereference, causing the server...

openssl: FFC-DH Peer Validation Uses Attacker-Supplied q

A flaw was found in OpenSSL. A malicious peer can exploit this vulnerability by presenting a specially crafted DHX X9.42 peer key. Due to improper validation of the peer key's subgroup membership, an attacker can recover the victim's private key after a small number of key exchange attempts. This...

openssl: untrusted sender DN used as format string in CMP response validation

A flaw was found in OpenSSL. A malicious CMP Certificate Management Protocol endpoint can send an unexpected distinguished name DN directly as the format string argument to ERRraisedata, causing the application to dereference and write to unrelated stack contents. This can lead to a crash in the...

openssl: heap buffer overflow in CMS key unwrapping

A flaw was found in OpenSSL. A crafted CMS Cryptographic Message Syntax message can cause an 8-byte out-of-bounds heap write when it is decrypted with CMSdecrypt. This issue occurs because the CMS decryption process incorrectly sizes the key-unwrap output buffer when using the AES-WRAP-PAD unwrap...

openssl: NULL Dereference in Certificate Verification with OCSP Checking

A flaw was found in OpenSSL. When an application is configured with specific non-default settings for certificate verification, including both Online Certificate Status Protocol OCSP response checking and partial chain verification, a NULL dereference can occur. This vulnerability can be triggere...

openssl: OpenSSL: Heap buffer overflow due to signed integer overflow in Unicode output sizing

A flaw was found in OpenSSL. A signed integer overflow vulnerability exists when sizing the destination buffer for Unicode output. This can lead to a heap buffer overflow, which may result in a crash or potentially allow an attacker to execute arbitrary code. Exploitation requires an application ...

openssl: Incorrect Tag Processing for Empty Messages in AES-GCM-SIV and AES-SIV modes

A flaw was found in OpenSSL. The implementations of AES-SIV Advanced Encryption Standard - SIV and AES-GCM-SIV Advanced Encryption Standard - Galois/Counter Mode - SIV incorrectly process authentication tags for empty messages. This vulnerability allows a remote attacker to forge empty messages...

openssl: NULL Pointer Dereference in CRMF EncryptedValue Decryption

A flaw was found in OpenSSL. An attacker controlling a Certificate Management Protocol CMP server, or acting as a man-in-the-middle, could craft a malicious CMP response. This response, containing a Certificate Request Message Format CRMF CertRepMessage with a specific malformed EncryptedValue...

openssl: Double-free When Checking OCSP Stapled Response

A flaw was found in OpenSSL. A malicious server can exploit the TLS Online Certificate Status Protocol OCSP stapling feature by sending a specially crafted response. This can trigger a double-free vulnerability in the client's certificate verification process, potentially leading to a Denial of...

openssl: Possible NULL Dereference in Password-Based CMS Decryption

A flaw was found in OpenSSL. A remote attacker could exploit a NULL pointer dereference vulnerability in the Cryptographic Message Syntax CMS decryption process by providing a specially crafted password-encrypted CMS message. This occurs because the keyDerivationAlgorithm field, which is optional...

openssl: RPK server signature algorithm selection can dereference a missing certificate

A flaw was found in OpenSSL. In a server or client configuration with RFC7250 Raw Public Keys RPKs enabled, where only the private key with no certificate is configured, a NULL pointer dereference may occur when the remote peer solicits raw public keys and also sends the typically omitted...