Medium: nspr, nss-util, nss, nss-softokn

Issue Overview:

A use-after-free flaw was found in the way NSS handled DHE (DiffieHellman key exchange) and ECDHE (Elliptic Curve Diffie-Hellman key exchange) 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. (CVE-2016-1978)

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. (CVE-2016-1979)

Affected Packages:

nspr, nss-util, nss, nss-softokn

Issue Correction:
Run yum update nspr to update your system.
Run yum update nss-util to update your system.
Run yum update nss to update your system.
Run yum update nss-softokn to update your system.

New Packages:

i686:  
    nspr-devel-4.11.0-1.37.amzn1.i686  
    nspr-4.11.0-1.37.amzn1.i686  
    nspr-debuginfo-4.11.0-1.37.amzn1.i686  
    nss-util-devel-3.21.0-2.2.50.amzn1.i686  
    nss-util-debuginfo-3.21.0-2.2.50.amzn1.i686  
    nss-util-3.21.0-2.2.50.amzn1.i686  
    nss-softokn-debuginfo-3.16.2.3-14.2.38.amzn1.i686  
    nss-softokn-devel-3.16.2.3-14.2.38.amzn1.i686  
    nss-softokn-3.16.2.3-14.2.38.amzn1.i686  
    nss-softokn-freebl-devel-3.16.2.3-14.2.38.amzn1.i686  
    nss-softokn-freebl-3.16.2.3-14.2.38.amzn1.i686  
    nss-pkcs11-devel-3.21.0-9.76.amzn1.i686  
    nss-tools-3.21.0-9.76.amzn1.i686  
    nss-3.21.0-9.76.amzn1.i686  
    nss-debuginfo-3.21.0-9.76.amzn1.i686  
    nss-sysinit-3.21.0-9.76.amzn1.i686  
    nss-devel-3.21.0-9.76.amzn1.i686  
  
src:  
    nspr-4.11.0-1.37.amzn1.src  
    nss-util-3.21.0-2.2.50.amzn1.src  
    nss-softokn-3.16.2.3-14.2.38.amzn1.src  
    nss-3.21.0-9.76.amzn1.src  
  
x86_64:  
    nspr-debuginfo-4.11.0-1.37.amzn1.x86_64  
    nspr-4.11.0-1.37.amzn1.x86_64  
    nspr-devel-4.11.0-1.37.amzn1.x86_64  
    nss-util-debuginfo-3.21.0-2.2.50.amzn1.x86_64  
    nss-util-3.21.0-2.2.50.amzn1.x86_64  
    nss-util-devel-3.21.0-2.2.50.amzn1.x86_64  
    nss-softokn-freebl-3.16.2.3-14.2.38.amzn1.x86_64  
    nss-softokn-3.16.2.3-14.2.38.amzn1.x86_64  
    nss-softokn-debuginfo-3.16.2.3-14.2.38.amzn1.x86_64  
    nss-softokn-freebl-devel-3.16.2.3-14.2.38.amzn1.x86_64  
    nss-softokn-devel-3.16.2.3-14.2.38.amzn1.x86_64  
    nss-3.21.0-9.76.amzn1.x86_64  
    nss-pkcs11-devel-3.21.0-9.76.amzn1.x86_64  
    nss-sysinit-3.21.0-9.76.amzn1.x86_64  
    nss-tools-3.21.0-9.76.amzn1.x86_64  
    nss-debuginfo-3.21.0-9.76.amzn1.x86_64  
    nss-devel-3.21.0-9.76.amzn1.x86_64  

Additional References

Red Hat: CVE-2016-1978, CVE-2016-1979

Mitre: CVE-2016-1978, CVE-2016-1979