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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities
NOTICE UPDATE

NIST has updated the NVD program announcement page with additional information regarding recent concerns and the temporary delays in enrichment efforts.

CVE-2017-7805 Detail

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.


Severity

 


CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.5 HIGH
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
http://www.securityfocus.com/bid/101059 Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1039465 Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2017:2832 Third Party Advisory 
https://bugzilla.mozilla.org/show_bug.cgi?id=1377618 Issue Tracking  Vendor Advisory 
https://lists.debian.org/debian-lts-announce/2017/11/msg00000.html Third Party Advisory 
https://security.gentoo.org/glsa/201803-14 Third Party Advisory 
https://www.debian.org/security/2017/dsa-3987 Third Party Advisory 
https://www.debian.org/security/2017/dsa-3998 Third Party Advisory 
https://www.debian.org/security/2017/dsa-4014 Third Party Advisory 
https://www.mozilla.org/security/advisories/mfsa2017-21/ Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2017-22/ Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2017-23/ Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST  

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-7805
NVD Published Date:
06/11/2018
NVD Last Modified:
10/16/2018
Source:
Mozilla Corporation