Vulnerability · NVD

CVE-2017-7805

CVE-2017-7805, high severity (CVSS 7.5): 2 tracked apps concerned, all fixed or indeterminable on their current version.

Severity (CVSS): 7.5
Exploitation: 3.1 %
Tracked apps: 2
Still exposed: 0

Published on 2018-06-11

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.

Attack vector : Network No privileges required No user interaction

Show raw CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS 3.05% above median percentile 87.4%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

Mozilla Firefox Windows winget:Mozilla.Firefox

Affected - Fixed in - Latest tracked 157.0.1 undetermined
Mozilla Thunderbird Windows winget:Mozilla.Thunderbird

Affected - Fixed in - Latest tracked 158.0 undetermined

Vulnerable CPE configurations (3)

Vendor	Product	Platform	Versions	CPE 2.3 URI
mozilla	firefox All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:mozilla:firefox:52.4.0:::::::*
mozilla	firefox All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:mozilla:firefox:56.0:::::::*
mozilla	thunderbird All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:mozilla:thunderbird:52.4.0:::::::*

View on NVD ↗ Advisory · bugzilla.mozilla.org Advisory · www.mozilla.org

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