CVE-2016-1979

Vulnerabilidad de uso después de liberación de memoria en la función PK11_ImportDERPrivateKeyInfoAndReturnKey en Mozilla Network Security Services (NSS) en versiones anteriores a 3.21.1, como se utiliza en Mozilla Firefox en versiones anteriores a 45.0, permite a atacantes remotos causar una denegación de servicio o posiblemente tener otro impacto no especificado a través de datos de clave manipulados con codificado DER.

A use-after-free flaw was found in the way NSS processed certain DER (Distinguished Encoding Rules) encoded cryptographic keys. An attacker could use this flaw to create a specially crafted DER encoded certificate which, when parsed by an application compiled against the NSS library, could cause that application to crash, or execute arbitrary code using the permissions of the user running the application.

Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications. Netscape Portable Runtime provides platform independence for non-GUI operating system facilities. The following packages have been upgraded to a newer upstream version: nss 3.21.0, nspr 4.11.0. Security Fix: A use-after-free flaw was found in the way NSS handled DHE and ECDHE handshake messages. A remote attacker could send a specially crafted handshake message that, when parsed by an application linked against NSS, would cause that application to crash or, under certain special conditions, execute arbitrary code using the permissions of the user running the application.