OpenSSL Remote Users Deny Service and Execute Arbitrary Code Vulnerabilities

Multiple vulnerabilities were reported in OpenSSL. A remote user can cause denial of service conditions on the target system. A remote authenticated user may be able to execute arbitrary code on the target system.

• A remote authenticated user can send specially crafted application data to a connected DTLS peer between the ChangeCipherSpec and Finished messages to trigger an invalid memory free and cause a segmentation fault or memory corruption error and potentially execute arbitrary code. Versions 0.9.8 prior to 0.9.8za, 1.0.0 prior to 1.0.0m, and 1.0.1 prior to 1.0.1h are affected.
• A remote user can send specially crafted ECParameters to cause the target service to enter an infinite loop. Applications that process public keys, certificate requests, or certificates are affected. TLS clients and TLS servers with client authentication enabled are affected. Versions 1.0.1 and 1.0.2 are affected.
• A remote user can create a specially crafted certificate or certificate revocation list (CRL) that, when processed by the target application, will trigger an out-of-bound memory read in X509_cmp_time() and cause a segmentation fault. TLS clients that verify CRLs are affected. TLS clients and servers with client authentication enabled and that use custom verification callbacks may be affected.
• A remote user can create specially crafted ASN.1-encoded PKCS#7 data with a missing EnvelopedContent component to trigger a null pointer dereference. Applications that decrypt or parse PKCS#7 data from untrusted sources are affected. OpenSSL clients and servers are not affected. The impact was not specified.
• A remote user can create a specially crafted signedData message that specifies an unknown hash function OID to trigger an infinite loop in the CMS code. Applications that verify signedData messages using the CMS code are affected.