Important: nss-util

Issue Overview:

Empty or malformed p256-ECDH public keys may trigger a segmentation fault due values being improperly sanitized before being copied into memory and used. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8. (CVE-2019-11729)

A heap-based buffer overflow was found in the NSC_EncryptUpdate() function in Mozilla nss. A remote attacker could trigger this flaw via SRTP encrypt or decrypt operations, to execute arbitrary code with the permissions of the user running the application (compiled with nss). While the attack complexity is high, the impact to confidentiality, integrity, and availability are high as well. (CVE-2019-11745)

Affected Packages:

nss-util

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

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

New Packages:

aarch64:  
    nss-util-3.44.0-4.amzn2.aarch64  
    nss-util-devel-3.44.0-4.amzn2.aarch64  
    nss-util-debuginfo-3.44.0-4.amzn2.aarch64  
  
i686:  
    nss-util-3.44.0-4.amzn2.i686  
    nss-util-devel-3.44.0-4.amzn2.i686  
    nss-util-debuginfo-3.44.0-4.amzn2.i686  
  
src:  
    nss-util-3.44.0-4.amzn2.src  
  
x86_64:  
    nss-util-3.44.0-4.amzn2.x86_64  
    nss-util-devel-3.44.0-4.amzn2.x86_64  
    nss-util-debuginfo-3.44.0-4.amzn2.x86_64  

Additional References

Red Hat: CVE-2019-11729, CVE-2019-11745

Mitre: CVE-2019-11729, CVE-2019-11745