Vulnerabilities

An invalid pointer dereference on read can be triggered when an<br /> application tries to check a malformed DSA public key by the<br /> EVP_PKEY_public_check() function. This will most likely lead<br /> to an application crash. This function can be called on public<br /> keys supplied from untrusted sources which could allow an attacker<br /> to cause a denial of service attack.<br /> <br /> The TLS implementation in OpenSSL does not call this function<br /> but applications might call the function if there are additional<br /> security requirements imposed by standards such as FIPS 140-3.

There is a type confusion vulnerability relating to X.400 address processing<br /> inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but<br /> the public structure definition for GENERAL_NAME incorrectly specified the type<br /> of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by<br /> the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an<br /> ASN1_STRING.<br /> <br /> When CRL checking is enabled (i.e. the application sets the<br /> X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass<br /> arbitrary pointers to a memcmp call, enabling them to read memory contents or<br /> enact a denial of service. In most cases, the attack requires the attacker to<br /> provide both the certificate chain and CRL, neither of which need to have a<br /> valid signature. If the attacker only controls one of these inputs, the other<br /> input must already contain an X.400 address as a CRL distribution point, which<br /> is uncommon. As such, this vulnerability is most likely to only affect<br /> applications which have implemented their own functionality for retrieving CRLs<br /> over a network.

A NULL pointer can be dereferenced when signatures are being<br /> verified on PKCS7 signed or signedAndEnveloped data. In case the hash<br /> algorithm used for the signature is known to the OpenSSL library but<br /> the implementation of the hash algorithm is not available the digest<br /> initialization will fail. There is a missing check for the return<br /> value from the initialization function which later leads to invalid<br /> usage of the digest API most likely leading to a crash.<br /> <br /> The unavailability of an algorithm can be caused by using FIPS<br /> enabled configuration of providers or more commonly by not loading<br /> the legacy provider.<br /> <br /> PKCS7 data is processed by the SMIME library calls and also by the<br /> time stamp (TS) library calls. The TLS implementation in OpenSSL does<br /> not call these functions however third party applications would be<br /> affected if they call these functions to verify signatures on untrusted<br /> data.

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IBM API Connect 10.0.0.0 through 10.0.5.0, 10.0.1.0 through 10.0.1.7, and 2018.4.1.0 through 2018.4.1.20 is vulnerable to External Service Interaction attack, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability to induce the application to perform server-side DNS lookups or HTTP requests to arbitrary domain names. By submitting suitable payloads, an attacker can cause the application server to attack other systems that it can interact with. IBM X-Force ID: 230264.

A timing based side channel exists in the OpenSSL RSA Decryption implementation<br /> which could be sufficient to recover a plaintext across a network in a<br /> Bleichenbacher style attack. To achieve a successful decryption an attacker<br /> would have to be able to send a very large number of trial messages for<br /> decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5,<br /> RSA-OEAP and RSASVE.<br /> <br /> For example, in a TLS connection, RSA is commonly used by a client to send an<br /> encrypted pre-master secret to the server. An attacker that had observed a<br /> genuine connection between a client and a server could use this flaw to send<br /> trial messages to the server and record the time taken to process them. After a<br /> sufficiently large number of messages the attacker could recover the pre-master<br /> secret used for the original connection and thus be able to decrypt the<br /> application data sent over that connection.

The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and<br /> decodes the "name" (e.g. "CERTIFICATE"), any header data and the payload data.<br /> If the function succeeds then the "name_out", "header" and "data" arguments are<br /> populated with pointers to buffers containing the relevant decoded data. The<br /> caller is responsible for freeing those buffers. It is possible to construct a<br /> PEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex()<br /> will return a failure code but will populate the header argument with a pointer<br /> to a buffer that has already been freed. If the caller also frees this buffer<br /> then a double free will occur. This will most likely lead to a crash. This<br /> could be exploited by an attacker who has the ability to supply malicious PEM<br /> files for parsing to achieve a denial of service attack.<br /> <br /> The functions PEM_read_bio() and PEM_read() are simple wrappers around<br /> PEM_read_bio_ex() and therefore these functions are also directly affected.<br /> <br /> These functions are also called indirectly by a number of other OpenSSL<br /> functions including PEM_X509_INFO_read_bio_ex() and<br /> SSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal<br /> uses of these functions are not vulnerable because the caller does not free the<br /> header argument if PEM_read_bio_ex() returns a failure code. These locations<br /> include the PEM_read_bio_TYPE() functions as well as the decoders introduced in<br /> OpenSSL 3.0.<br /> <br /> The OpenSSL asn1parse command line application is also impacted by this issue.

Privilege escalation in the MSI repair functionality in Caphyon Advanced Installer 20.0 and below allows attackers to access and manipulate system files.

IBM Sterling External Authentication Server 6.1.0 and IBM Sterling Secure Proxy 6.0.3 uses weaker than expected cryptographic algorithms during installation that could allow a local attacker to decrypt sensitive information. IBM X-Force ID: 231373.

SQL Injection vulnerability in Future-Depth Institutional Management Website (IMS) 1.0, allows attackers to execute arbitrary commands via the ad parameter to /admin_area/login_transfer.php.

File upload vulnerability in Future-Depth Institutional Management Website (IMS) 1.0, allows unauthorized attackers to directly upload malicious files to the courseimg directory.

Cross-site scripting (XSS) vulnerability in EyouCMS v1.6.0 allows attackers to execute arbitrary code via the home page description on the basic information page.