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USN-3850-2: NSS vulnerabilities

18 February 2019

Several security issues were fixed in NSS.

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Releases

Packages

  • nss - Network Security Service library

Details

USN-3850-1 fixed several vulnerabilities in NSS. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

Keegan Ryan discovered that NSS incorrectly handled ECDSA key generation.
A local attacker could possibly use this issue to perform a cache-timing
attack and recover private ECDSA keys. (CVE-2018-0495)

It was discovered that NSS incorrectly handled certain v2-compatible
ClientHello messages. A remote attacker could possibly use this issue to
perform a replay attack. (CVE-2018-12384)

It was discovered that NSS incorrectly handled certain padding oracles. A
remote attacker could possibly use this issue to perform a variant of the
Bleichenbacher attack. (CVE-2018-12404)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04

After a standard system update you need to restart any applications that
use NSS, such as Evolution, to make all the necessary changes.

Related notices

  • USN-3692-1: openssl, libssl1.0.0-udeb, libssl-dev, libcrypto1.1-udeb, libssl1.0.0, libssl-doc, libssl1.0-dev, openssl1.0, libcrypto1.0.0-udeb, libssl1.1, libssl1.1-udeb
  • USN-3692-2: openssl, libssl1.0.0
  • USN-3689-2: libgcrypt11
  • USN-3689-1: libgcrypt-mingw-w64-dev, libgcrypt11-dev, libgcrypt11, libgcrypt20-dev, libgcrypt20, libgcrypt11-doc, libgcrypt20-doc, libgcrypt11-udeb, libgcrypt20-udeb
  • USN-3850-1: libnss3-dev, libnss3-nssdb, libnss3, libnss3-tools, libnss3-1d, nss