Rapid7 VulnDB

CentOS: (CVE-2017-7805) CESA-2017:2832: nss

Back to Search

CentOS: (CVE-2017-7805) CESA-2017:2832: nss

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
09/28/2017
Created
07/25/2018
Added
10/02/2017
Modified
05/07/2019

Description

During TLS 1.2 exchanges, handshake hashes are generated which point to a message buffer. This saved data is used for later messages but in some cases, the handshake transcript can exceed the space available in the current buffer, causing the allocation of a new buffer. This leaves a pointer pointing to the old, freed buffer, resulting in a use-after-free when handshake hashes are then calculated afterwards. This can result in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.

Solution(s)

  • centos-upgrade-nss
  • centos-upgrade-nss-devel
  • centos-upgrade-nss-pkcs11-devel
  • centos-upgrade-nss-sysinit
  • centos-upgrade-nss-tools

References

  • centos-upgrade-nss
  • centos-upgrade-nss-devel
  • centos-upgrade-nss-pkcs11-devel
  • centos-upgrade-nss-sysinit
  • centos-upgrade-nss-tools

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;